22331230022221 has 4 divisors (see below), whose sum is σ = 23644831788252. Its totient is φ = 21017628256192.

The previous prime is 22331230022219. The next prime is 22331230022239. The reversal of 22331230022221 is 12222003213322.

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 9243947028996 + 13087282993225 = 3040386^2 + 3617635^2 .

It is a cyclic number.

It is not a de Polignac number, because 22331230022221 - 2¹ = 22331230022219 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 (22331230022021) 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, 656800882990 + ... + 656800883023.

It is an arithmetic number, because the mean of its divisors is an integer number (5911207947063).

Almost surely, 2^{22331230022221} is an apocalyptic number.

It is an amenable number.

22331230022221 is a deficient number, since it is larger than the sum of its proper divisors (1313601766031).

22331230022221 is a wasteful number, since it uses less digits than its factorization.

22331230022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313601766030.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 22331230022221 its reverse (12222003213322), we get a palindrome (34553233235543).

The spelling of 22331230022221 in words is "twenty-two trillion, three hundred thirty-one billion, two hundred thirty million, twenty-two thousand, two hundred twenty-one".