12222022220021 has 16 divisors (see below), whose sum is σ = 12752404094976. Its totient is φ = 11700832320000.

The previous prime is 12222022220017. The next prime is 12222022220033. The reversal of 12222022220021 is 12002222022221.

It is a cyclic number.

It is not a de Polignac number, because 12222022220021 - 2² = 12222022220017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12222022219975 and 12222022220002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222022220071) 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, 4630460 + ... + 6773861.

It is an arithmetic number, because the mean of its divisors is an integer number (797025255936).

Almost surely, 2^{12222022220021} is an apocalyptic number.

It is an amenable number.

12222022220021 is a deficient number, since it is larger than the sum of its proper divisors (530381874955).

12222022220021 is a wasteful number, since it uses less digits than its factorization.

12222022220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11404724.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 12222022220021 its reverse (12002222022221), we get a palindrome (24224244242242).

The spelling of 12222022220021 in words is "twelve trillion, two hundred twenty-two billion, twenty-two million, two hundred twenty thousand, twenty-one".