21131200011308 has 24 divisors (see below), whose sum is σ = 38172857017344. Its totient is φ = 10224675982800.

The previous prime is 21131200011301. The next prime is 21131200011319. The reversal of 21131200011308 is 80311000213112.

It is a super-2 number, since 2×21131200011308² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21131200011301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13092041 + ... + 14617247.

It is an arithmetic number, because the mean of its divisors is an integer number (1590535709056).

Almost surely, 2^{21131200011308} is an apocalyptic number.

It is an amenable number.

21131200011308 is a deficient number, since it is larger than the sum of its proper divisors (17041657006036).

21131200011308 is a wasteful number, since it uses less digits than its factorization.

21131200011308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1636973 (or 1636971 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 21131200011308 in words is "twenty-one trillion, one hundred thirty-one billion, two hundred million, eleven thousand, three hundred eight".