210121021112 has 32 divisors (see below), whose sum is σ = 395206477920. Its totient is φ = 104733058560.

The previous prime is 210121021067. The next prime is 210121021151. The reversal of 210121021112 is 211120121012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3984437 + ... + 4036827.

It is an arithmetic number, because the mean of its divisors is an integer number (12350202435).

Almost surely, 2^210121021112 is an apocalyptic number.

It is an amenable number.

210121021112 is a deficient number, since it is larger than the sum of its proper divisors (185085456808).

210121021112 is a wasteful number, since it uses less digits than its factorization.

210121021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53951 (or 53947 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210121021112 its reverse (211120121012), we get a palindrome (421241142124).

The spelling of 210121021112 in words is "two hundred ten billion, one hundred twenty-one million, twenty-one thousand, one hundred twelve".