21750095220131 has 4 divisors (see below), whose sum is σ = 21757299627000. Its totient is φ = 21742890813264.

The previous prime is 21750095220107. The next prime is 21750095220149. The reversal of 21750095220131 is 13102259005712.

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 21750095220131 - 2²⁶ = 21750028111267 is a prime.

It is a super-2 number, since 2×21750095220131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21750095220631) 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, 3602198906 + ... + 3602204943.

It is an arithmetic number, because the mean of its divisors is an integer number (5439324906750).

Almost surely, 2^{21750095220131} is an apocalyptic number.

21750095220131 is a deficient number, since it is larger than the sum of its proper divisors (7204406869).

21750095220131 is an equidigital number, since it uses as much as digits as its factorization.

21750095220131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7204406868.

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 21750095220131 in words is "twenty-one trillion, seven hundred fifty billion, ninety-five million, two hundred twenty thousand, one hundred thirty-one".