111332120100 has 36 divisors (see below), whose sum is σ = 322120935024. Its totient is φ = 29688565280.

The previous prime is 111332120099. The next prime is 111332120143. The reversal of 111332120100 is 1021233111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 111332120100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185553234 + ... + 185553833.

Almost surely, 2^111332120100 is an apocalyptic number.

111332120100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111332120100 is an abundant number, since it is smaller than the sum of its proper divisors (210788814924).

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

111332120100 is a wasteful number, since it uses less digits than its factorization.

111332120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371107084 (or 371107077 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 111332120100 its reverse (1021233111), we get a palindrome (112353353211).

The spelling of 111332120100 in words is "one hundred eleven billion, three hundred thirty-two million, one hundred twenty thousand, one hundred".