22321623221 has 2 divisors, whose sum is σ = 22321623222. Its totient is φ = 22321623220.

The previous prime is 22321623199. The next prime is 22321623241. The reversal of 22321623221 is 12232612322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18082180900 + 4239442321 = 134470^2 + 65111^2 .

It is a cyclic number.

It is not a de Polignac number, because 22321623221 - 2⁶ = 22321623157 is a prime.

It is a super-3 number, since 3×22321623221³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22321623241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11160811610 + 11160811611.

It is an arithmetic number, because the mean of its divisors is an integer number (11160811611).

Almost surely, 2^22321623221 is an apocalyptic number.

It is an amenable number.

22321623221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22321623221 is an equidigital number, since it uses as much as digits as its factorization.

22321623221 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 26.

The spelling of 22321623221 in words is "twenty-two billion, three hundred twenty-one million, six hundred twenty-three thousand, two hundred twenty-one".