22451215422 has 64 divisors (see below), whose sum is σ = 46479168000. Its totient is φ = 7224370560.

The previous prime is 22451215417. The next prime is 22451215429.

22451215422 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22451215422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22451215429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27345772 + ... + 27346592.

It is an arithmetic number, because the mean of its divisors is an integer number (726237000).

Almost surely, 2^22451215422 is an apocalyptic number.

22451215422 is an abundant number, since it is smaller than the sum of its proper divisors (24027952578).

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

22451215422 is a wasteful number, since it uses less digits than its factorization.

22451215422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681.

The product of its digits is 12800, while the sum is 30.

The spelling of 22451215422 in words is "twenty-two billion, four hundred fifty-one million, two hundred fifteen thousand, four hundred twenty-two".