22002223323221 has 4 divisors (see below), whose sum is σ = 22002376718700. Its totient is φ = 22002069927744.

The previous prime is 22002223323203. The next prime is 22002223323239. The reversal of 22002223323221 is 12232332220022.

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

It is an interprime number because it is at equal distance from previous prime (22002223323203) and next prime (22002223323239).

It can be written as a sum of positive squares in 2 ways, for example, as 4560232120900 + 17441991202321 = 2135470^2 + 4176361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22002223323221 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 (22002223328221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76482386 + ... + 76769523.

It is an arithmetic number, because the mean of its divisors is an integer number (5500594179675).

Almost surely, 2^{22002223323221} is an apocalyptic number.

It is an amenable number.

22002223323221 is a deficient number, since it is larger than the sum of its proper divisors (153395479).

22002223323221 is a wasteful number, since it uses less digits than its factorization.

22002223323221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153395478.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 22002223323221 its reverse (12232332220022), we get a palindrome (34234555543243).

The spelling of 22002223323221 in words is "twenty-two trillion, two billion, two hundred twenty-three million, three hundred twenty-three thousand, two hundred twenty-one".