12210517157 has 2 divisors, whose sum is σ = 12210517158. Its totient is φ = 12210517156.

The previous prime is 12210517153. The next prime is 12210517169. The reversal of 12210517157 is 75171501221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7520184961 + 4690332196 = 86719^2 + 68486^2 .

It is a cyclic number.

It is not a de Polignac number, because 12210517157 - 2² = 12210517153 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12210517153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105258578 + 6105258579.

It is an arithmetic number, because the mean of its divisors is an integer number (6105258579).

Almost surely, 2^12210517157 is an apocalyptic number.

It is an amenable number.

12210517157 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210517157 is an equidigital number, since it uses as much as digits as its factorization.

12210517157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4900, while the sum is 32.

The spelling of 12210517157 in words is "twelve billion, two hundred ten million, five hundred seventeen thousand, one hundred fifty-seven".