21113133113313 has 24 divisors (see below), whose sum is σ = 30817599789600. Its totient is φ = 13927642844544.

The previous prime is 21113133113291. The next prime is 21113133113321. The reversal of 21113133113313 is 31331133131112.

21113133113313 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 3 + 1 + 331 + 13 + 313 = 666.

It is not a de Polignac number, because 21113133113313 - 2¹⁰ = 21113133112289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21113133113353) 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, 11934328 + ... + 13588761.

It is an arithmetic number, because the mean of its divisors is an integer number (1284066657900).

Almost surely, 2^{21113133113313} is an apocalyptic number.

It is an amenable number.

21113133113313 is a deficient number, since it is larger than the sum of its proper divisors (9704466676287).

21113133113313 is a wasteful number, since it uses less digits than its factorization.

21113133113313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25524061 (or 25524058 counting only the distinct ones).

The product of its digits is 1458, while the sum is 27.

Adding to 21113133113313 its reverse (31331133131112), we get a palindrome (52444266244425).

The spelling of 21113133113313 in words is "twenty-one trillion, one hundred thirteen billion, one hundred thirty-three million, one hundred thirteen thousand, three hundred thirteen".