12200121021012 has 24 divisors (see below), whose sum is σ = 28468679918112. Its totient is φ = 4066459740000.

The previous prime is 12200121021007. The next prime is 12200121021029. The reversal of 12200121021012 is 21012012100221.

It is a junction number, because it is equal to n+sod(n) for n = 12200121020982 and 12200121021000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30702739 + ... + 31097562.

It is an arithmetic number, because the mean of its divisors is an integer number (1186194996588).

Almost surely, 2^{12200121021012} is an apocalyptic number.

12200121021012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12200121021012 is an abundant number, since it is smaller than the sum of its proper divisors (16268558897100).

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

12200121021012 is a wasteful number, since it uses less digits than its factorization.

12200121021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61816759 (or 61816757 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12200121021012 its reverse (21012012100221), we get a palindrome (33212133121233).

The spelling of 12200121021012 in words is "twelve trillion, two hundred billion, one hundred twenty-one million, twenty-one thousand, twelve".