202112202157 has 2 divisors, whose sum is σ = 202112202158. Its totient is φ = 202112202156.

The previous prime is 202112202143. The next prime is 202112202169. The reversal of 202112202157 is 751202211202.

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., 162123801316 + 39988400841 = 402646^2 + 199971^2 .

It is a cyclic number.

It is not a de Polignac number, because 202112202157 - 2³⁵ = 167752463789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202112202107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101056101078 + 101056101079.

It is an arithmetic number, because the mean of its divisors is an integer number (101056101079).

Almost surely, 2^202112202157 is an apocalyptic number.

It is an amenable number.

202112202157 is a deficient number, since it is larger than the sum of its proper divisors (1).

202112202157 is an equidigital number, since it uses as much as digits as its factorization.

202112202157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1120, while the sum is 25.

Adding to 202112202157 its reverse (751202211202), we get a palindrome (953314413359).

The spelling of 202112202157 in words is "two hundred two billion, one hundred twelve million, two hundred two thousand, one hundred fifty-seven".