111111372 has 24 divisors (see below), whose sum is σ = 288066800. Its totient is φ = 37037088.

The previous prime is 111111361. The next prime is 111111391. The reversal of 111111372 is 273111111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 514297 + ... + 514512.

Almost surely, 2^111111372 is an apocalyptic number.

111111372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111111372 is an abundant number, since it is smaller than the sum of its proper divisors (176955428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111111372 is a wasteful number, since it uses less digits than its factorization.

111111372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1028822 (or 1028814 counting only the distinct ones).

The product of its digits is 42, while the sum is 18.

The square root of 111111372 is about 10540.9379089339. The cubic root of 111111372 is about 480.7502330357.

Adding to 111111372 its reverse (273111111), we get a palindrome (384222483).

The spelling of 111111372 in words is "one hundred eleven million, one hundred eleven thousand, three hundred seventy-two".