210120901100 has 72 divisors (see below), whose sum is σ = 497485794288. Its totient is φ = 76396492800.

The previous prime is 210120901099. The next prime is 210120901117. The reversal of 210120901100 is 1109021012.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13800692 + ... + 13815908.

Almost surely, 2^210120901100 is an apocalyptic number.

210120901100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210120901100 is an abundant number, since it is smaller than the sum of its proper divisors (287364893188).

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

210120901100 is a wasteful number, since it uses less digits than its factorization.

210120901100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27795 (or 27788 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 210120901100 its reverse (1109021012), we get a palindrome (211229922112).

The spelling of 210120901100 in words is "two hundred ten billion, one hundred twenty million, nine hundred one thousand, one hundred".