210111130157 has 2 divisors, whose sum is σ = 210111130158. Its totient is φ = 210111130156.

The previous prime is 210111130109. The next prime is 210111130211. The reversal of 210111130157 is 751031111012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134504829001 + 75606301156 = 366749^2 + 274966^2 .

It is a cyclic number.

It is not a de Polignac number, because 210111130157 - 2²⁸ = 209842694701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210111130357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105055565078 + 105055565079.

It is an arithmetic number, because the mean of its divisors is an integer number (105055565079).

Almost surely, 2^210111130157 is an apocalyptic number.

It is an amenable number.

210111130157 is a deficient number, since it is larger than the sum of its proper divisors (1).

210111130157 is an equidigital number, since it uses as much as digits as its factorization.

210111130157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 210, while the sum is 23.

Adding to 210111130157 its reverse (751031111012), we get a palindrome (961142241169).

The spelling of 210111130157 in words is "two hundred ten billion, one hundred eleven million, one hundred thirty thousand, one hundred fifty-seven".