22202212210021 has 4 divisors (see below), whose sum is σ = 22206286763500. Its totient is φ = 22198137656544.

The previous prime is 22202212210019. The next prime is 22202212210037. The reversal of 22202212210021 is 12001221220222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8395332400900 + 13806879809121 = 2897470^2 + 3715761^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202212210021 - 2¹ = 22202212210019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202212210051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037268566 + ... + 2037279463.

It is an arithmetic number, because the mean of its divisors is an integer number (5551571690875).

Almost surely, 2^{22202212210021} is an apocalyptic number.

It is an amenable number.

22202212210021 is a deficient number, since it is larger than the sum of its proper divisors (4074553479).

22202212210021 is an equidigital number, since it uses as much as digits as its factorization.

22202212210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074553478.

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

Adding to 22202212210021 its reverse (12001221220222), we get a palindrome (34203433430243).

The spelling of 22202212210021 in words is "twenty-two trillion, two hundred two billion, two hundred twelve million, two hundred ten thousand, twenty-one".