210000021112120 has 128 divisors (see below), whose sum is σ = 511540613055360. Its totient is φ = 77297137090560.

The previous prime is 210000021112093. The next prime is 210000021112253. The reversal of 210000021112120 is 21211120000012.

It is a super-2 number, since 2×210000021112120² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210000021112120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8230569 + ... + 22084888.

It is an arithmetic number, because the mean of its divisors is an integer number (3996411039495).

Almost surely, 2^{210000021112120} is an apocalyptic number.

210000021112120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210000021112120 is an abundant number, since it is smaller than the sum of its proper divisors (301540591943240).

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

210000021112120 is a wasteful number, since it uses less digits than its factorization.

210000021112120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30315713 (or 30315709 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 210000021112120 its reverse (21211120000012), we get a palindrome (231211141112132).

The spelling of 210000021112120 in words is "two hundred ten trillion, twenty-one million, one hundred twelve thousand, one hundred twenty".