21514012032131 has 4 divisors (see below), whose sum is σ = 21546559706064. Its totient is φ = 21481464358200.

The previous prime is 21514012032127. The next prime is 21514012032157. The reversal of 21514012032131 is 13123021041512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21514012032131 - 2² = 21514012032127 is a prime.

It is a super-2 number, since 2×21514012032131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21514012032131.

It is not an unprimeable number, because it can be changed into a prime (21514012022131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16273835975 + ... + 16273837296.

It is an arithmetic number, because the mean of its divisors is an integer number (5386639926516).

Almost surely, 2^{21514012032131} is an apocalyptic number.

21514012032131 is a deficient number, since it is larger than the sum of its proper divisors (32547673933).

21514012032131 is an equidigital number, since it uses as much as digits as its factorization.

21514012032131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32547673932.

The product of its (nonzero) digits is 1440, while the sum is 26.

Adding to 21514012032131 its reverse (13123021041512), we get a palindrome (34637033073643).

The spelling of 21514012032131 in words is "twenty-one trillion, five hundred fourteen billion, twelve million, thirty-two thousand, one hundred thirty-one".