21242904322 has 8 divisors (see below), whose sum is σ = 31871233296. Its totient is φ = 10619159892.

The previous prime is 21242904299. The next prime is 21242904341. The reversal of 21242904322 is 22340924212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1134528 + ... + 1153099.

It is an arithmetic number, because the mean of its divisors is an integer number (3983904162).

Almost surely, 2^21242904322 is an apocalyptic number.

21242904322 is a deficient number, since it is larger than the sum of its proper divisors (10628328974).

21242904322 is a wasteful number, since it uses less digits than its factorization.

21242904322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292272.

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 21242904322 in words is "twenty-one billion, two hundred forty-two million, nine hundred four thousand, three hundred twenty-two".