12200121002121 has 32 divisors (see below), whose sum is σ = 18524277488640. Its totient is φ = 7088371430400.

The previous prime is 12200121002117. The next prime is 12200121002171. The reversal of 12200121002121 is 12120012100221.

It is not a de Polignac number, because 12200121002121 - 2² = 12200121002117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12200121002121.

It is not an unprimeable number, because it can be changed into a prime (12200121002171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123012436 + ... + 123111573.

It is an arithmetic number, because the mean of its divisors is an integer number (578883671520).

Almost surely, 2^{12200121002121} is an apocalyptic number.

It is an amenable number.

12200121002121 is a deficient number, since it is larger than the sum of its proper divisors (6324156486519).

12200121002121 is a wasteful number, since it uses less digits than its factorization.

12200121002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246124097.

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

Adding to 12200121002121 its reverse (12120012100221), we get a palindrome (24320133102342).

The spelling of 12200121002121 in words is "twelve trillion, two hundred billion, one hundred twenty-one million, two thousand, one hundred twenty-one".