22222022012121 has 16 divisors (see below), whose sum is σ = 30357981134208. Its totient is φ = 14450513808000.

The previous prime is 22222022012117. The next prime is 22222022012147. The reversal of 22222022012121 is 12121022022222.

It is not a de Polignac number, because 22222022012121 - 2² = 22222022012117 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22222022012171) 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, 17081541 + ... + 18336386.

It is an arithmetic number, because the mean of its divisors is an integer number (1897373820888).

Almost surely, 2^{22222022012121} is an apocalyptic number.

It is an amenable number.

22222022012121 is a deficient number, since it is larger than the sum of its proper divisors (8135959122087).

22222022012121 is a wasteful number, since it uses less digits than its factorization.

22222022012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35423072.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22222022012121 its reverse (12121022022222), we get a palindrome (34343044034343).

The spelling of 22222022012121 in words is "twenty-two trillion, two hundred twenty-two billion, twenty-two million, twelve thousand, one hundred twenty-one".