111551100442 has 8 divisors (see below), whose sum is σ = 167329209600. Its totient is φ = 55774697244.

The previous prime is 111551100373. The next prime is 111551100457. The reversal of 111551100442 is 244001155111.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 248092 + ... + 533527.

It is an arithmetic number, because the mean of its divisors is an integer number (20916151200).

Almost surely, 2^111551100442 is an apocalyptic number.

111551100442 is a deficient number, since it is larger than the sum of its proper divisors (55778109158).

111551100442 is an equidigital number, since it uses as much as digits as its factorization.

111551100442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852980.

The product of its (nonzero) digits is 800, while the sum is 25.

Adding to 111551100442 its reverse (244001155111), we get a palindrome (355552255553).

The spelling of 111551100442 in words is "one hundred eleven billion, five hundred fifty-one million, one hundred thousand, four hundred forty-two".