21000211303131 has 96 divisors (see below), whose sum is σ = 33057838195200. Its totient is φ = 12792602833920.

The previous prime is 21000211303081. The next prime is 21000211303153. The reversal of 21000211303131 is 13130311200012.

21000211303131 is a `hidden beast` number, since 21 + 0 + 0 + 0 + 211 + 303 + 131 = 666.

It is not a de Polignac number, because 21000211303131 - 2²² = 21000207108827 is a prime.

It is a super-2 number, since 2×21000211303131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21000211303171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7689567036 + ... + 7689569766.

It is an arithmetic number, because the mean of its divisors is an integer number (344352481200).

Almost surely, 2^{21000211303131} is an apocalyptic number.

21000211303131 is a deficient number, since it is larger than the sum of its proper divisors (12057626892069).

21000211303131 is a wasteful number, since it uses less digits than its factorization.

21000211303131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5249 (or 5246 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 21000211303131 its reverse (13130311200012), we get a palindrome (34130522503143).

The spelling of 21000211303131 in words is "twenty-one trillion, two hundred eleven million, three hundred three thousand, one hundred thirty-one".