22450808721 has 8 divisors (see below), whose sum is σ = 32655721824. Its totient is φ = 13606550720.

The previous prime is 22450808717. The next prime is 22450808729. The reversal of 22450808721 is 12780805422.

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

It is a cyclic number.

It is not a de Polignac number, because 22450808721 - 2² = 22450808717 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22450808721.

It is not an unprimeable number, because it can be changed into a prime (22450808729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340163736 + ... + 340163801.

It is an arithmetic number, because the mean of its divisors is an integer number (4081965228).

Almost surely, 2^22450808721 is an apocalyptic number.

It is an amenable number.

22450808721 is a deficient number, since it is larger than the sum of its proper divisors (10204913103).

22450808721 is a wasteful number, since it uses less digits than its factorization.

22450808721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680327551.

The product of its (nonzero) digits is 71680, while the sum is 39.

The spelling of 22450808721 in words is "twenty-two billion, four hundred fifty million, eight hundred eight thousand, seven hundred twenty-one".