12220121011100 has 36 divisors (see below), whose sum is σ = 26520050332104. Its totient is φ = 4887608268480.

The previous prime is 12220121011073. The next prime is 12220121011123. The reversal of 12220121011100 is 111012102221.

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, 4384442 + ... + 6607841.

Almost surely, 2^{12220121011100} is an apocalyptic number.

12220121011100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220121011100 is an abundant number, since it is smaller than the sum of its proper divisors (14299929321004).

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

12220121011100 is a wasteful number, since it uses less digits than its factorization.

12220121011100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11003414 (or 11003407 counting only the distinct ones).

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

Adding to 12220121011100 its reverse (111012102221), we get a palindrome (12331133113321).

The spelling of 12220121011100 in words is "twelve trillion, two hundred twenty billion, one hundred twenty-one million, eleven thousand, one hundred".