111001000122100 has 36 divisors (see below), whose sum is σ = 262769640291648. Its totient is φ = 40364000044000.

The previous prime is 111001000122079. The next prime is 111001000122151. The reversal of 111001000122100 is 1221000100111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

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, 50454998956 + ... + 50455001155.

It is an arithmetic number, because the mean of its divisors is an integer number (7299156674768).

Almost surely, 2^{111001000122100} is an apocalyptic number.

111001000122100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111001000122100 is an abundant number, since it is smaller than the sum of its proper divisors (151768640169548).

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

111001000122100 is a wasteful number, since it uses less digits than its factorization.

111001000122100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100910000136 (or 100910000129 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111001000122100 its reverse (1221000100111), we get a palindrome (112222000222211).

The spelling of 111001000122100 in words is "one hundred eleven trillion, one billion, one hundred twenty-two thousand, one hundred".