12122200222121 has 16 divisors (see below), whose sum is σ = 13285943663040. Its totient is φ = 10968773148480.

The previous prime is 12122200222109. The next prime is 12122200222129.

12122200222121 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 12122200222121 - 2³⁸ = 11847322315177 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12122200222093 and 12122200222102.

It is not an unprimeable number, because it can be changed into a prime (12122200222129) 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, 7712195 + ... + 9149991.

It is an arithmetic number, because the mean of its divisors is an integer number (830371478940).

Almost surely, 2^{12122200222121} is an apocalyptic number.

12122200222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12122200222121 is a deficient number, since it is larger than the sum of its proper divisors (1163743440919).

12122200222121 is a wasteful number, since it uses less digits than its factorization.

12122200222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441384.

The product of its (nonzero) digits is 256, while the sum is 20.

It can be divided in two parts, 12122200 and 222121, that added together give a palindrome (12344321).

The spelling of 12122200222121 in words is "twelve trillion, one hundred twenty-two billion, two hundred million, two hundred twenty-two thousand, one hundred twenty-one".