22131274505 has 8 divisors (see below), whose sum is σ = 26595418824. Its totient is φ = 17679760000.

The previous prime is 22131274481. The next prime is 22131274541. The reversal of 22131274505 is 50547213122.

It can be written as a sum of positive squares in 4 ways, for example, as 2608757776 + 19522516729 = 51076^2 + 139723^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22131274505 - 2¹⁰ = 22131273481 is a prime.

It is a super-2 number, since 2×22131274505² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3153596 + ... + 3160605.

It is an arithmetic number, because the mean of its divisors is an integer number (3324427353).

Almost surely, 2^22131274505 is an apocalyptic number.

It is an amenable number.

22131274505 is a deficient number, since it is larger than the sum of its proper divisors (4464144319).

22131274505 is an equidigital number, since it uses as much as digits as its factorization.

22131274505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6314907.

The product of its (nonzero) digits is 16800, while the sum is 32.

Adding to 22131274505 its reverse (50547213122), we get a palindrome (72678487627).

The spelling of 22131274505 in words is "twenty-two billion, one hundred thirty-one million, two hundred seventy-four thousand, five hundred five".