210221121112 has 64 divisors (see below), whose sum is σ = 413863992000. Its totient is φ = 99916185600.

The previous prime is 210221121059. The next prime is 210221121137. The reversal of 210221121112 is 211121122012.

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, 21227362 + ... + 21237262.

It is an arithmetic number, because the mean of its divisors is an integer number (6466624875).

Almost surely, 2^210221121112 is an apocalyptic number.

It is an amenable number.

210221121112 is a deficient number, since it is larger than the sum of its proper divisors (203642870888).

210221121112 is a wasteful number, since it uses less digits than its factorization.

210221121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10636 (or 10632 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210221121112 its reverse (211121122012), we get a palindrome (421342243124).

The spelling of 210221121112 in words is "two hundred ten billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred twelve".