22115129 has 2 divisors, whose sum is σ = 22115130. Its totient is φ = 22115128.

The previous prime is 22115111. The next prime is 22115143. The reversal of 22115129 is 92151122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21603904 + 511225 = 4648^2 + 715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22115129 is a prime.

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 (22115179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11057564 + 11057565.

It is an arithmetic number, because the mean of its divisors is an integer number (11057565).

Almost surely, 2^22115129 is an apocalyptic number.

It is an amenable number.

22115129 is a deficient number, since it is larger than the sum of its proper divisors (1).

22115129 is an equidigital number, since it uses as much as digits as its factorization.

22115129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 23.

The square root of 22115129 is about 4702.6725380362. The cubic root of 22115129 is about 280.6918647123.

The spelling of 22115129 in words is "twenty-two million, one hundred fifteen thousand, one hundred twenty-nine".