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21233025120 = 2535299411621
BaseRepresentation
bin10011110001100101…
…100100000001100000
32000210202200102201210
4103301211210001200
5321441123300440
613430533230120
71351113510216
oct236145440140
960722612653
1021233025120
11900654204a
124146a92340
132004c92cb8
141055d70cb6
1584412ba80
hex4f1964060

21233025120 has 192 divisors, whose sum is σ = 69306632640. Its totient is φ = 5457715200.

The previous prime is 21233025059. The next prime is 21233025131. The reversal of 21233025120 is 2152033212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13097910 + ... + 13099530.

It is an arithmetic number, because the mean of its divisors is an integer number (360972045).

Almost surely, 221233025120 is an apocalyptic number.

21233025120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21233025120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34653316320).

21233025120 is an abundant number, since it is smaller than the sum of its proper divisors (48073607520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21233025120 is a wasteful number, since it uses less digits than its factorization.

21233025120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2609 (or 2601 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 21233025120 its reverse (2152033212), we get a palindrome (23385058332).

The spelling of 21233025120 in words is "twenty-one billion, two hundred thirty-three million, twenty-five thousand, one hundred twenty".