22421550331 has 4 divisors (see below), whose sum is σ = 22423834872. Its totient is φ = 22419265792.

The previous prime is 22421550323. The next prime is 22421550353. The reversal of 22421550331 is 13305512422.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22421550331 - 2³ = 22421550323 is a prime.

It is a super-2 number, since 2×22421550331² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22421550331.

It is not an unprimeable number, because it can be changed into a prime (22421550131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1127485 + ... + 1147198.

It is an arithmetic number, because the mean of its divisors is an integer number (5605958718).

Almost surely, 2^22421550331 is an apocalyptic number.

22421550331 is a deficient number, since it is larger than the sum of its proper divisors (2284541).

22421550331 is an equidigital number, since it uses as much as digits as its factorization.

22421550331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2284540.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 22421550331 in words is "twenty-two billion, four hundred twenty-one million, five hundred fifty thousand, three hundred thirty-one".