22721421304 has 8 divisors (see below), whose sum is σ = 42602664960. Its totient is φ = 11360710648.

The previous prime is 22721421299. The next prime is 22721421313. The reversal of 22721421304 is 40312412722.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1420088824 + ... + 1420088839.

It is an arithmetic number, because the mean of its divisors is an integer number (5325333120).

Almost surely, 2^22721421304 is an apocalyptic number.

It is an amenable number.

22721421304 is a deficient number, since it is larger than the sum of its proper divisors (19881243656).

22721421304 is a wasteful number, since it uses less digits than its factorization.

22721421304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840177669 (or 2840177665 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 28.

The spelling of 22721421304 in words is "twenty-two billion, seven hundred twenty-one million, four hundred twenty-one thousand, three hundred four".