222920315509 has 2 divisors, whose sum is σ = 222920315510. Its totient is φ = 222920315508.

The previous prime is 222920315479. The next prime is 222920315533. The reversal of 222920315509 is 905513029222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193179588484 + 29740727025 = 439522^2 + 172455^2 .

It is a cyclic number.

It is not a de Polignac number, because 222920315509 - 2¹¹ = 222920313461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222920315599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111460157754 + 111460157755.

It is an arithmetic number, because the mean of its divisors is an integer number (111460157755).

Almost surely, 2^222920315509 is an apocalyptic number.

It is an amenable number.

222920315509 is a deficient number, since it is larger than the sum of its proper divisors (1).

222920315509 is an equidigital number, since it uses as much as digits as its factorization.

222920315509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 222920315509 in words is "two hundred twenty-two billion, nine hundred twenty million, three hundred fifteen thousand, five hundred nine".