21222763324 has 12 divisors (see below), whose sum is σ = 42445526704. Its totient is φ = 9095469984.

The previous prime is 21222763321. The next prime is 21222763351. The reversal of 21222763324 is 42336722212.

21222763324 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 21222763324.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222763321) 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, 378977889 + ... + 378977944.

Almost surely, 2^21222763324 is an apocalyptic number.

It is an amenable number.

21222763324 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21222763324 is a wasteful number, since it uses less digits than its factorization.

21222763324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757955844 (or 757955842 counting only the distinct ones).

The product of its digits is 48384, while the sum is 34.

The spelling of 21222763324 in words is "twenty-one billion, two hundred twenty-two million, seven hundred sixty-three thousand, three hundred twenty-four".