22110797809 has 9 divisors (see below), whose sum is σ = 22238968161. Its totient is φ = 21983364480.

The previous prime is 22110797803. The next prime is 22110797827. The reversal of 22110797809 is 90879701122.

The square root of 22110797809 is 148697.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 2602530225 + 19508267584 = 51015^2 + 139672^2 .

It is not a de Polignac number, because 22110797809 - 2¹⁵ = 22110765041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22110797803) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 35835669 + ... + 35836285.

Almost surely, 2^22110797809 is an apocalyptic number.

22110797809 is the 148697-th square number.

22110797809 is the 74349-th centered octagonal number.

It is an amenable number.

22110797809 is a deficient number, since it is larger than the sum of its proper divisors (128170352).

22110797809 is an frugal number, since it uses more digits than its factorization.

22110797809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1716 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 46.

The spelling of 22110797809 in words is "twenty-two billion, one hundred ten million, seven hundred ninety-seven thousand, eight hundred nine".