12122210202121 has 16 divisors (see below), whose sum is σ = 12644034480000. Its totient is φ = 11607488395776.

The previous prime is 12122210202043. The next prime is 12122210202161. The reversal of 12122210202121 is 12120201222121.

It is not a de Polignac number, because 12122210202121 - 2²⁷ = 12122075984393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12122210202161) 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, 2126260 + ... + 5363338.

It is an arithmetic number, because the mean of its divisors is an integer number (790252155000).

Almost surely, 2^{12122210202121} is an apocalyptic number.

It is an amenable number.

12122210202121 is a deficient number, since it is larger than the sum of its proper divisors (521824277879).

12122210202121 is a wasteful number, since it uses less digits than its factorization.

12122210202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238176.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12122210202121 its reverse (12120201222121), we get a palindrome (24242411424242).

The spelling of 12122210202121 in words is "twelve trillion, one hundred twenty-two billion, two hundred ten million, two hundred two thousand, one hundred twenty-one".