12122200121 has 16 divisors (see below), whose sum is σ = 12643931520. Its totient is φ = 11614012800.

The previous prime is 12122200087. The next prime is 12122200141. The reversal of 12122200121 is 12100222121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122200121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12122200096 and 12122200105.

It is not an unprimeable number, because it can be changed into a prime (12122200141) 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, 459341 + ... + 485013.

It is an arithmetic number, because the mean of its divisors is an integer number (790245720).

Almost surely, 2^12122200121 is an apocalyptic number.

It is an amenable number.

12122200121 is a deficient number, since it is larger than the sum of its proper divisors (521731399).

12122200121 is a wasteful number, since it uses less digits than its factorization.

12122200121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25936.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 12122200121 its reverse (12100222121), we get a palindrome (24222422242).

The spelling of 12122200121 in words is "twelve billion, one hundred twenty-two million, two hundred thousand, one hundred twenty-one".