21110200121012 has 24 divisors (see below), whose sum is σ = 38490952792320. Its totient is φ = 10119149282880.

The previous prime is 21110200120991. The next prime is 21110200121041. The reversal of 21110200121012 is 21012100201112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795517337 + ... + 795543872.

It is an arithmetic number, because the mean of its divisors is an integer number (1603789699680).

Almost surely, 2^{21110200121012} is an apocalyptic number.

It is an amenable number.

21110200121012 is a deficient number, since it is larger than the sum of its proper divisors (17380752671308).

21110200121012 is a wasteful number, since it uses less digits than its factorization.

21110200121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591061351 (or 1591061349 counting only the distinct ones).

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

Adding to 21110200121012 its reverse (21012100201112), we get a palindrome (42122300322124).

The spelling of 21110200121012 in words is "twenty-one trillion, one hundred ten billion, two hundred million, one hundred twenty-one thousand, twelve".