202111157 has 2 divisors, whose sum is σ = 202111158. Its totient is φ = 202111156.

The previous prime is 202111141. The next prime is 202111163. The reversal of 202111157 is 751111202.

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., 156400036 + 45711121 = 12506^2 + 6761^2 .

It is a cyclic number.

It is not a de Polignac number, because 202111157 - 2⁴ = 202111141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202111127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101055578 + 101055579.

It is an arithmetic number, because the mean of its divisors is an integer number (101055579).

Almost surely, 2^202111157 is an apocalyptic number.

It is an amenable number.

202111157 is a deficient number, since it is larger than the sum of its proper divisors (1).

202111157 is an equidigital number, since it uses as much as digits as its factorization.

202111157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 202111157 is about 14216.5803553457. The cubic root of 202111157 is about 586.8540364769.

Adding to 202111157 its reverse (751111202), we get a palindrome (953222359).

The spelling of 202111157 in words is "two hundred two million, one hundred eleven thousand, one hundred fifty-seven".