111225131 has 2 divisors, whose sum is σ = 111225132. Its totient is φ = 111225130.

The previous prime is 111225119. The next prime is 111225151. The reversal of 111225131 is 131522111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111225131 - 2¹⁰ = 111224107 is a prime.

It is a super-2 number, since 2×111225131² = 24742059531934322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (111225151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55612565 + 55612566.

It is an arithmetic number, because the mean of its divisors is an integer number (55612566).

Almost surely, 2^111225131 is an apocalyptic number.

111225131 is a deficient number, since it is larger than the sum of its proper divisors (1).

111225131 is an equidigital number, since it uses as much as digits as its factorization.

111225131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60, while the sum is 17.

The square root of 111225131 is about 10546.3325853114. The cubic root of 111225131 is about 480.9142456869.

Adding to 111225131 its reverse (131522111), we get a palindrome (242747242).

The spelling of 111225131 in words is "one hundred eleven million, two hundred twenty-five thousand, one hundred thirty-one".