22131097877 has 4 divisors (see below), whose sum is σ = 25292683296. Its totient is φ = 18969512460.

The previous prime is 22131097871. The next prime is 22131097889. The reversal of 22131097877 is 77879013122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22131097877 - 2⁴ = 22131097861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22131097871) 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, 1580792699 + ... + 1580792712.

It is an arithmetic number, because the mean of its divisors is an integer number (6323170824).

Almost surely, 2^22131097877 is an apocalyptic number.

It is an amenable number.

22131097877 is a deficient number, since it is larger than the sum of its proper divisors (3161585419).

22131097877 is an equidigital number, since it uses as much as digits as its factorization.

22131097877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161585418.

The product of its (nonzero) digits is 296352, while the sum is 47.

The spelling of 22131097877 in words is "twenty-two billion, one hundred thirty-one million, ninety-seven thousand, eight hundred seventy-seven".