21142210113 has 64 divisors (see below), whose sum is σ = 32185520640. Its totient is φ = 13713408000.

The previous prime is 21142210069. The next prime is 21142210129. The reversal of 21142210113 is 31101224112.

It is not a de Polignac number, because 21142210113 - 2¹² = 21142206017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21142210153) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 67981228 + ... + 67981538.

It is an arithmetic number, because the mean of its divisors is an integer number (502898760).

Almost surely, 2^21142210113 is an apocalyptic number.

It is an amenable number.

21142210113 is a deficient number, since it is larger than the sum of its proper divisors (11043310527).

21142210113 is a wasteful number, since it uses less digits than its factorization.

21142210113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 769 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 21142210113 its reverse (31101224112), we get a palindrome (52243434225).

The spelling of 21142210113 in words is "twenty-one billion, one hundred forty-two million, two hundred ten thousand, one hundred thirteen".