22251105731 has 2 divisors, whose sum is σ = 22251105732. Its totient is φ = 22251105730.

The previous prime is 22251105719. The next prime is 22251105733. The reversal of 22251105731 is 13750115222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22251105731 - 2²⁶ = 22183996867 is a prime.

It is a super-2 number, since 2×22251105731² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 22251105733, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22251105694 and 22251105703.

It is not a weakly prime, because it can be changed into another prime (22251105733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11125552865 + 11125552866.

It is an arithmetic number, because the mean of its divisors is an integer number (11125552866).

Almost surely, 2^22251105731 is an apocalyptic number.

22251105731 is a deficient number, since it is larger than the sum of its proper divisors (1).

22251105731 is an equidigital number, since it uses as much as digits as its factorization.

22251105731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 29.

The spelling of 22251105731 in words is "twenty-two billion, two hundred fifty-one million, one hundred five thousand, seven hundred thirty-one".