22215505289 has 2 divisors, whose sum is σ = 22215505290. Its totient is φ = 22215505288.

The previous prime is 22215505199. The next prime is 22215505297. The reversal of 22215505289 is 98250551222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13198103689 + 9017401600 = 114883^2 + 94960^2 .

It is a cyclic number.

It is not a de Polignac number, because 22215505289 - 2²⁰ = 22214456713 is a prime.

It is not a weakly prime, because it can be changed into another prime (22215505889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11107752644 + 11107752645.

It is an arithmetic number, because the mean of its divisors is an integer number (11107752645).

Almost surely, 2^22215505289 is an apocalyptic number.

It is an amenable number.

22215505289 is a deficient number, since it is larger than the sum of its proper divisors (1).

22215505289 is an equidigital number, since it uses as much as digits as its factorization.

22215505289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 22215505289 in words is "twenty-two billion, two hundred fifteen million, five hundred five thousand, two hundred eighty-nine".