20012155310 has 32 divisors (see below), whose sum is σ = 41567565312. Its totient is φ = 6794693280.

The previous prime is 20012155297. The next prime is 20012155337. The reversal of 20012155310 is 1355121002.

It is a happy number.

It is a super-2 number, since 2×20012155310² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1380596 + ... + 1395015.

It is an arithmetic number, because the mean of its divisors is an integer number (1298986416).

Almost surely, 2^20012155310 is an apocalyptic number.

20012155310 is an abundant number, since it is smaller than the sum of its proper divisors (21555410002).

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

20012155310 is a wasteful number, since it uses less digits than its factorization.

20012155310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2775728.

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 20012155310 its reverse (1355121002), we get a palindrome (21367276312).

The spelling of 20012155310 in words is "twenty billion, twelve million, one hundred fifty-five thousand, three hundred ten".