22022121509 has 2 divisors, whose sum is σ = 22022121510. Its totient is φ = 22022121508.

The previous prime is 22022121493. The next prime is 22022121533. The reversal of 22022121509 is 90512122022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17553600100 + 4468521409 = 132490^2 + 66847^2 .

It is a cyclic number.

It is not a de Polignac number, because 22022121509 - 2⁴ = 22022121493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22022121599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11011060754 + 11011060755.

It is an arithmetic number, because the mean of its divisors is an integer number (11011060755).

Almost surely, 2^22022121509 is an apocalyptic number.

It is an amenable number.

22022121509 is a deficient number, since it is larger than the sum of its proper divisors (1).

22022121509 is an equidigital number, since it uses as much as digits as its factorization.

22022121509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 26.

The spelling of 22022121509 in words is "twenty-two billion, twenty-two million, one hundred twenty-one thousand, five hundred nine".