210021220112 has 20 divisors (see below), whose sum is σ = 443908488336. Its totient is φ = 95464190880.

The previous prime is 210021220069. The next prime is 210021220147. The reversal of 210021220112 is 211022120012.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596651018 + ... + 596651369.

Almost surely, 2^210021220112 is an apocalyptic number.

210021220112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

210021220112 is an abundant number, since it is smaller than the sum of its proper divisors (233887268224).

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

210021220112 is a wasteful number, since it uses less digits than its factorization.

210021220112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193302406 (or 1193302400 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210021220112 its reverse (211022120012), we get a palindrome (421043340124).

It can be divided in two parts, 2100 and 21220112, that added together give a palindrome (21222212).

The spelling of 210021220112 in words is "two hundred ten billion, twenty-one million, two hundred twenty thousand, one hundred twelve".