111220040 has 16 divisors (see below), whose sum is σ = 250245180. Its totient is φ = 44488000.

The previous prime is 111220037. The next prime is 111220051. The reversal of 111220040 is 40022111.

It can be written as a sum of positive squares in 2 ways, for example, as 110208004 + 1012036 = 10498^2 + 1006^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1390211 + ... + 1390290.

Almost surely, 2^111220040 is an apocalyptic number.

111220040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111220040 is an abundant number, since it is smaller than the sum of its proper divisors (139025140).

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

111220040 is a wasteful number, since it uses less digits than its factorization.

111220040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2780512 (or 2780508 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 111220040 is about 10546.0912190252. The cubic root of 111220040 is about 480.9069081012.

Adding to 111220040 its reverse (40022111), we get a palindrome (151242151).

The spelling of 111220040 in words is "one hundred eleven million, two hundred twenty thousand, forty".