201010100220 has 72 divisors (see below), whose sum is σ = 610224224064. Its totient is φ = 53559301248.

The previous prime is 201010100201. The next prime is 201010100227. The reversal of 201010100220 is 22001010102.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201010100227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 228724 + ... + 674043.

Almost surely, 2^201010100220 is an apocalyptic number.

201010100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201010100220 is an abundant number, since it is smaller than the sum of its proper divisors (409214123844).

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

201010100220 is a wasteful number, since it uses less digits than its factorization.

201010100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904019 (or 904014 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 201010100220 its reverse (22001010102), we get a palindrome (223011110322).

The spelling of 201010100220 in words is "two hundred one billion, ten million, one hundred thousand, two hundred twenty".