112221121100 has 216 divisors, whose sum is σ = 274544303040. Its totient is φ = 39474800000.

The previous prime is 112221121093. The next prime is 112221121139. The reversal of 112221121100 is 1121122211.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 447095975 + ... + 447096225.

It is an arithmetic number, because the mean of its divisors is an integer number (1271038440).

Almost surely, 2^112221121100 is an apocalyptic number.

112221121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 112221121100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137272151520).

112221121100 is an abundant number, since it is smaller than the sum of its proper divisors (162323181940).

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

112221121100 is a wasteful number, since it uses less digits than its factorization.

112221121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 112221121100 its reverse (1121122211), we get a palindrome (113342243311).

The spelling of 112221121100 in words is "one hundred twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred".