111321137 has 2 divisors, whose sum is σ = 111321138. Its totient is φ = 111321136.

The previous prime is 111321121. The next prime is 111321149. The reversal of 111321137 is 731123111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107143201 + 4177936 = 10351^2 + 2044^2 .

It is a cyclic number.

It is not a de Polignac number, because 111321137 - 2⁴ = 111321121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111321107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55660568 + 55660569.

It is an arithmetic number, because the mean of its divisors is an integer number (55660569).

Almost surely, 2^111321137 is an apocalyptic number.

It is an amenable number.

111321137 is a deficient number, since it is larger than the sum of its proper divisors (1).

111321137 is an equidigital number, since it uses as much as digits as its factorization.

111321137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126, while the sum is 20.

The square root of 111321137 is about 10550.8832331706. The cubic root of 111321137 is about 481.0525758606.

Adding to 111321137 its reverse (731123111), we get a palindrome (842444248).

The spelling of 111321137 in words is "one hundred eleven million, three hundred twenty-one thousand, one hundred thirty-seven".