15122922209 has 2 divisors, whose sum is σ = 15122922210. Its totient is φ = 15122922208.

The previous prime is 15122922197. The next prime is 15122922229. The reversal of 15122922209 is 90222922151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14567283025 + 555639184 = 120695^2 + 23572^2 .

It is an emirp because it is prime and its reverse (90222922151) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 15122922209 - 2⁸ = 15122921953 is a prime.

It is a super-2 number, since 2×15122922209² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15122922229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7561461104 + 7561461105.

It is an arithmetic number, because the mean of its divisors is an integer number (7561461105).

Almost surely, 2^15122922209 is an apocalyptic number.

It is an amenable number.

15122922209 is a deficient number, since it is larger than the sum of its proper divisors (1).

15122922209 is an equidigital number, since it uses as much as digits as its factorization.

15122922209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 15122922209 in words is "fifteen billion, one hundred twenty-two million, nine hundred twenty-two thousand, two hundred nine".