111638012269 has 12 divisors (see below), whose sum is σ = 129871473984. Its totient is φ = 95684679384.

The previous prime is 111638012257. The next prime is 111638012287. The reversal of 111638012269 is 962210836111.

It is not a de Polignac number, because 111638012269 - 2³⁵ = 77278273901 is a prime.

It is a super-2 number, since 2×111638012269² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111638012069) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1108284 + ... + 1204810.

It is an arithmetic number, because the mean of its divisors is an integer number (10822622832).

Almost surely, 2^111638012269 is an apocalyptic number.

It is an amenable number.

111638012269 is a deficient number, since it is larger than the sum of its proper divisors (18233461715).

111638012269 is an equidigital number, since it uses as much as digits as its factorization.

111638012269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120144 (or 120137 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 111638012269 in words is "one hundred eleven billion, six hundred thirty-eight million, twelve thousand, two hundred sixty-nine".