12021120012100 has 36 divisors (see below), whose sum is σ = 26086142130048. Its totient is φ = 4808390548000.

The previous prime is 12021120012061. The next prime is 12021120012101. The reversal of 12021120012100 is 121002112021.

It is a super-2 number, since 2×12021120012100² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12021120012101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8249505 + ... + 9596695.

It is an arithmetic number, because the mean of its divisors is an integer number (724615059168).

Almost surely, 2^{12021120012100} is an apocalyptic number.

12021120012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021120012100 is an abundant number, since it is smaller than the sum of its proper divisors (14065022117948).

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

12021120012100 is a wasteful number, since it uses less digits than its factorization.

12021120012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436436 (or 1436429 counting only the distinct ones).

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

Adding to 12021120012100 its reverse (121002112021), we get a palindrome (12142122124121).

The spelling of 12021120012100 in words is "twelve trillion, twenty-one billion, one hundred twenty million, twelve thousand, one hundred".