2222120212021 has 4 divisors (see below), whose sum is σ = 2222439168352. Its totient is φ = 2221801255692.

The previous prime is 2222120211989. The next prime is 2222120212027. The reversal of 2222120212021 is 1202120212222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2222120212021 - 2⁵ = 2222120211989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2222120212021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222120212027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159467715 + ... + 159481648.

It is an arithmetic number, because the mean of its divisors is an integer number (555609792088).

Almost surely, 2^{2222120212021} is an apocalyptic number.

It is an amenable number.

2222120212021 is a deficient number, since it is larger than the sum of its proper divisors (318956331).

2222120212021 is an equidigital number, since it uses as much as digits as its factorization.

2222120212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318956330.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2222120212021 its reverse (1202120212222), we get a palindrome (3424240424243).

The spelling of 2222120212021 in words is "two trillion, two hundred twenty-two billion, one hundred twenty million, two hundred twelve thousand, twenty-one".