2112231157 has 2 divisors, whose sum is σ = 2112231158. Its totient is φ = 2112231156.

The previous prime is 2112231133. The next prime is 2112231161. The reversal of 2112231157 is 7511322112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2111770116 + 461041 = 45954^2 + 679^2 .

It is a cyclic number.

It is not a de Polignac number, because 2112231157 - 2⁷ = 2112231029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2112231167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056115578 + 1056115579.

It is an arithmetic number, because the mean of its divisors is an integer number (1056115579).

Almost surely, 2^2112231157 is an apocalyptic number.

It is an amenable number.

2112231157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112231157 is an equidigital number, since it uses as much as digits as its factorization.

2112231157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 840, while the sum is 25.

The square root of 2112231157 is about 45959.0160577878. The cubic root of 2112231157 is about 1283.0605386249.

Adding to 2112231157 its reverse (7511322112), we get a palindrome (9623553269).

The spelling of 2112231157 in words is "two billion, one hundred twelve million, two hundred thirty-one thousand, one hundred fifty-seven".