112121220100 has 72 divisors (see below), whose sum is σ = 244372359168. Its totient is φ = 44651827200.

The previous prime is 112121220089. The next prime is 112121220103. The reversal of 112121220100 is 1022121211.

It is not an unprimeable number, because it can be changed into a prime (112121220103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24548017 + ... + 24552583.

It is an arithmetic number, because the mean of its divisors is an integer number (3394060544).

Almost surely, 2^112121220100 is an apocalyptic number.

112121220100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112121220100 is an abundant number, since it is smaller than the sum of its proper divisors (132251139068).

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

112121220100 is a wasteful number, since it uses less digits than its factorization.

112121220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5605 (or 5598 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 112121220100 its reverse (1022121211), we get a palindrome (113143341311).

The spelling of 112121220100 in words is "one hundred twelve billion, one hundred twenty-one million, two hundred twenty thousand, one hundred".