111420111552 has 28 divisors (see below), whose sum is σ = 294799045656. Its totient is φ = 37140037120.

The previous prime is 111420111541. The next prime is 111420111601. The reversal of 111420111552 is 255111024111.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 290156349 + ... + 290156732.

Almost surely, 2^111420111552 is an apocalyptic number.

111420111552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111420111552 is an abundant number, since it is smaller than the sum of its proper divisors (183378934104).

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

111420111552 is an equidigital number, since it uses as much as digits as its factorization.

111420111552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580313096 (or 580313086 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 24.

Adding to 111420111552 its reverse (255111024111), we get a palindrome (366531135663).

The spelling of 111420111552 in words is "one hundred eleven billion, four hundred twenty million, one hundred eleven thousand, five hundred fifty-two".