21112631199 has 24 divisors (see below), whose sum is σ = 33302385792. Its totient is φ = 12782458320.

The previous prime is 21112631131. The next prime is 21112631203. The reversal of 21112631199 is 99113621112.

21112631199 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 2 + 631 + 19 + 9 = 666.

It is not a de Polignac number, because 21112631199 - 2¹¹ = 21112629151 is a prime.

It is a super-2 number, since 2×21112631199² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112631119) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11157 + ... + 205790.

It is an arithmetic number, because the mean of its divisors is an integer number (1387599408).

Almost surely, 2^21112631199 is an apocalyptic number.

21112631199 is a deficient number, since it is larger than the sum of its proper divisors (12189754593).

21112631199 is a wasteful number, since it uses less digits than its factorization.

21112631199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217947 (or 217944 counting only the distinct ones).

The product of its digits is 5832, while the sum is 36.

The spelling of 21112631199 in words is "twenty-one billion, one hundred twelve million, six hundred thirty-one thousand, one hundred ninety-nine".