111122110121100 has 144 divisors (see below), whose sum is σ = 347026695036672. Its totient is φ = 27291389149440.

The previous prime is 111122110121063. The next prime is 111122110121131. The reversal of 111122110121100 is 1121011221111.

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 111122110121100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30431272 + ... + 33886671.

Almost surely, 2^{111122110121100} is an apocalyptic number.

111122110121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111122110121100 is an abundant number, since it is smaller than the sum of its proper divisors (235904584915572).

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

111122110121100 is a wasteful number, since it uses less digits than its factorization.

111122110121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64318416 (or 64318409 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 111122110121100 its reverse (1121011221111), we get a palindrome (112243121342211).

The spelling of 111122110121100 in words is "one hundred eleven trillion, one hundred twenty-two billion, one hundred ten million, one hundred twenty-one thousand, one hundred".