15122122129 has 2 divisors, whose sum is σ = 15122122130. Its totient is φ = 15122122128.

The previous prime is 15122122117. The next prime is 15122122139. The reversal of 15122122129 is 92122122151.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13306083904 + 1816038225 = 115352^2 + 42615^2 .

It is a cyclic number.

It is not a de Polignac number, because 15122122129 - 2¹¹ = 15122120081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15122122097 and 15122122106.

It is not a weakly prime, because it can be changed into another prime (15122122139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7561061064 + 7561061065.

It is an arithmetic number, because the mean of its divisors is an integer number (7561061065).

Almost surely, 2^15122122129 is an apocalyptic number.

It is an amenable number.

15122122129 is a deficient number, since it is larger than the sum of its proper divisors (1).

15122122129 is an equidigital number, since it uses as much as digits as its factorization.

15122122129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 28.

The spelling of 15122122129 in words is "fifteen billion, one hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty-nine".