22255555321 has 8 divisors (see below), whose sum is σ = 23773244904. Its totient is φ = 20761036800.

The previous prime is 22255555303. The next prime is 22255555331. The reversal of 22255555321 is 12355555222.

It can be written as a sum of positive squares in 4 ways, for example, as 100721296 + 22154834025 = 10036^2 + 148845^2 .

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 22255555321 - 2¹⁹ = 22255031033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22255555331) 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, 5790780 + ... + 5794621.

It is an arithmetic number, because the mean of its divisors is an integer number (2971655613).

Almost surely, 2^22255555321 is an apocalyptic number.

It is an amenable number.

22255555321 is a deficient number, since it is larger than the sum of its proper divisors (1517689583).

22255555321 is a wasteful number, since it uses less digits than its factorization.

22255555321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11585531.

The product of its digits is 150000, while the sum is 37.

Subtracting from 22255555321 its reverse (12355555222), we obtain a palindrome (9900000099).

The spelling of 22255555321 in words is "twenty-two billion, two hundred fifty-five million, five hundred fifty-five thousand, three hundred twenty-one".