21422423322 has 40 divisors (see below), whose sum is σ = 48040150356. Its totient is φ = 7135147008.

The previous prime is 21422423317. The next prime is 21422423329. The reversal of 21422423322 is 22332422412.

21422423322 is a `hidden beast` number, since 2 + 1 + 422 + 4 + 233 + 2 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 19633894641 + 1788528681 = 140121^2 + 42291^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (21422423329) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 155098 + ... + 258650.

Almost surely, 2^21422423322 is an apocalyptic number.

21422423322 is an abundant number, since it is smaller than the sum of its proper divisors (26617727034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21422423322 is a wasteful number, since it uses less digits than its factorization.

21422423322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104844 (or 104835 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

Adding to 21422423322 its reverse (22332422412), we get a palindrome (43754845734).

The spelling of 21422423322 in words is "twenty-one billion, four hundred twenty-two million, four hundred twenty-three thousand, three hundred twenty-two".