21120002120110 has 16 divisors (see below), whose sum is σ = 38032892352432. Its totient is φ = 8444247840000.

The previous prime is 21120002120099. The next prime is 21120002120123. The reversal of 21120002120110 is 1102120002112.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 469102371 + ... + 469147390.

It is an arithmetic number, because the mean of its divisors is an integer number (2377055772027).

Almost surely, 2^{21120002120110} is an apocalyptic number.

21120002120110 is a deficient number, since it is larger than the sum of its proper divisors (16912890232322).

21120002120110 is a wasteful number, since it uses less digits than its factorization.

21120002120110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 938252019.

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

Adding to 21120002120110 its reverse (1102120002112), we get a palindrome (22222122122222).

The spelling of 21120002120110 in words is "twenty-one trillion, one hundred twenty billion, two million, one hundred twenty thousand, one hundred ten".