21012210132111 has 60 divisors (see below), whose sum is σ = 34583879530200. Its totient is φ = 12704277310560.

The previous prime is 21012210132031. The next prime is 21012210132119. The reversal of 21012210132111 is 11123101221012.

It is a happy number.

21012210132111 is a `hidden beast` number, since 210 + 1 + 2 + 210 + 132 + 111 = 666.

It is not a de Polignac number, because 21012210132111 - 2¹⁴ = 21012210115727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21012210132119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1548285 + ... + 6664953.

It is an arithmetic number, because the mean of its divisors is an integer number (576397992170).

Almost surely, 2^{21012210132111} is an apocalyptic number.

21012210132111 is a deficient number, since it is larger than the sum of its proper divisors (13571669398089).

21012210132111 is a wasteful number, since it uses less digits than its factorization.

21012210132111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5117122 (or 5117102 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 21012210132111 its reverse (11123101221012), we get a palindrome (32135311353123).

The spelling of 21012210132111 in words is "twenty-one trillion, twelve billion, two hundred ten million, one hundred thirty-two thousand, one hundred eleven".