12200120121 has 16 divisors (see below), whose sum is σ = 18595411328. Its totient is φ = 6969715200.

The previous prime is 12200120087. The next prime is 12200120143. The reversal of 12200120121 is 12102100221.

It is not a de Polignac number, because 12200120121 - 2¹⁸ = 12199857977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12200120097 and 12200120106.

It is not an unprimeable number, because it can be changed into a prime (12200520121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12201 + ... + 156681.

It is an arithmetic number, because the mean of its divisors is an integer number (1162213208).

Almost surely, 2^12200120121 is an apocalyptic number.

It is an amenable number.

12200120121 is a deficient number, since it is larger than the sum of its proper divisors (6395291207).

12200120121 is a wasteful number, since it uses less digits than its factorization.

12200120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148512.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 12200120121 its reverse (12102100221), we get a palindrome (24302220342).

The spelling of 12200120121 in words is "twelve billion, two hundred million, one hundred twenty thousand, one hundred twenty-one".