111213404400 has 120 divisors (see below), whose sum is σ = 407147008384. Its totient is φ = 25420204800.

The previous prime is 111213404399. The next prime is 111213404411. The reversal of 111213404400 is 4404312111.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6611446 + ... + 6628245.

Almost surely, 2^111213404400 is an apocalyptic number.

111213404400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111213404400 is an abundant number, since it is smaller than the sum of its proper divisors (295933603984).

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

111213404400 is a wasteful number, since it uses less digits than its factorization.

111213404400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13239719 (or 13239708 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 111213404400 its reverse (4404312111), we get a palindrome (115617716511).

The spelling of 111213404400 in words is "one hundred eleven billion, two hundred thirteen million, four hundred four thousand, four hundred".