22565221243 has 8 divisors (see below), whose sum is σ = 22950059760. Its totient is φ = 22180462080.

The previous prime is 22565221193. The next prime is 22565221267. The reversal of 22565221243 is 34212256522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22565221243 - 2²⁵ = 22531666811 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22565221199 and 22565221208.

It is not an unprimeable number, because it can be changed into a prime (22565221543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 971283 + ... + 994243.

It is an arithmetic number, because the mean of its divisors is an integer number (2868757470).

Almost surely, 2^22565221243 is an apocalyptic number.

22565221243 is a deficient number, since it is larger than the sum of its proper divisors (384838517).

22565221243 is a wasteful number, since it uses less digits than its factorization.

22565221243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39677.

The product of its digits is 57600, while the sum is 34.

Adding to 22565221243 its reverse (34212256522), we get a palindrome (56777477765).

The spelling of 22565221243 in words is "twenty-two billion, five hundred sixty-five million, two hundred twenty-one thousand, two hundred forty-three".