212370157 has 2 divisors, whose sum is σ = 212370158. Its totient is φ = 212370156.

The previous prime is 212370131. The next prime is 212370167. The reversal of 212370157 is 751073212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210221001 + 2149156 = 14499^2 + 1466^2 .

It is a cyclic number.

It is not a de Polignac number, because 212370157 - 2²⁷ = 78152429 is a prime.

It is equal to p_11725147 and since 212370157 and 11725147 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212370107) 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, 106185078 + 106185079.

It is an arithmetic number, because the mean of its divisors is an integer number (106185079).

Almost surely, 2^212370157 is an apocalyptic number.

It is an amenable number.

212370157 is a deficient number, since it is larger than the sum of its proper divisors (1).

212370157 is an equidigital number, since it uses as much as digits as its factorization.

212370157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 212370157 is about 14572.9254784343. The cubic root of 212370157 is about 596.6200296802.

The spelling of 212370157 in words is "two hundred twelve million, three hundred seventy thousand, one hundred fifty-seven".