22115022161 has 2 divisors, whose sum is σ = 22115022162. Its totient is φ = 22115022160.

The previous prime is 22115022109. The next prime is 22115022187. The reversal of 22115022161 is 16122051122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19114721536 + 3000300625 = 138256^2 + 54775^2 .

It is a cyclic number.

It is not a de Polignac number, because 22115022161 - 2²⁶ = 22047913297 is a prime.

It is a super-2 number, since 2×22115022161² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (22115022661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11057511080 + 11057511081.

It is an arithmetic number, because the mean of its divisors is an integer number (11057511081).

Almost surely, 2^22115022161 is an apocalyptic number.

It is an amenable number.

22115022161 is a deficient number, since it is larger than the sum of its proper divisors (1).

22115022161 is an equidigital number, since it uses as much as digits as its factorization.

22115022161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 22115022161 its reverse (16122051122), we get a palindrome (38237073283).

The spelling of 22115022161 in words is "twenty-two billion, one hundred fifteen million, twenty-two thousand, one hundred sixty-one".