21211110200131 has 2 divisors, whose sum is σ = 21211110200132. Its totient is φ = 21211110200130.

The previous prime is 21211110200047. The next prime is 21211110200173. The reversal of 21211110200131 is 13100201111212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21211110200131 - 2³⁷ = 21073671246659 is a prime.

It is a super-2 number, since 2×21211110200131² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21211110201131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10605555100065 + 10605555100066.

It is an arithmetic number, because the mean of its divisors is an integer number (10605555100066).

Almost surely, 2^{21211110200131} is an apocalyptic number.

21211110200131 is a deficient number, since it is larger than the sum of its proper divisors (1).

21211110200131 is an equidigital number, since it uses as much as digits as its factorization.

21211110200131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 21211110200131 its reverse (13100201111212), we get a palindrome (34311311311343).

The spelling of 21211110200131 in words is "twenty-one trillion, two hundred eleven billion, one hundred ten million, two hundred thousand, one hundred thirty-one".