12220100121100 has 108 divisors (see below), whose sum is σ = 27406104407472. Its totient is φ = 4729414262400.

The previous prime is 12220100121077. The next prime is 12220100121133. The reversal of 12220100121100 is 112100102221.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 655680982 + ... + 655699618.

Almost surely, 2^{12220100121100} is an apocalyptic number.

12220100121100 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 12220100121100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13703052203736).

12220100121100 is an abundant number, since it is smaller than the sum of its proper divisors (15186004286372).

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

12220100121100 is a wasteful number, since it uses less digits than its factorization.

12220100121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25536 (or 25498 counting only the distinct ones).

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

Adding to 12220100121100 its reverse (112100102221), we get a palindrome (12332200223321).

The spelling of 12220100121100 in words is "twelve trillion, two hundred twenty billion, one hundred million, one hundred twenty-one thousand, one hundred".