22201000021 has 8 divisors (see below), whose sum is σ = 22931967744. Its totient is φ = 21470957760.

The previous prime is 22201000001. The next prime is 22201000039. The reversal of 22201000021 is 12000010222.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22201000021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22200999971 and 22201000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201000001) 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, 182431 + ... + 278716.

It is an arithmetic number, because the mean of its divisors is an integer number (2866495968).

Almost surely, 2^22201000021 is an apocalyptic number.

It is an amenable number.

22201000021 is a deficient number, since it is larger than the sum of its proper divisors (730967723).

22201000021 is a wasteful number, since it uses less digits than its factorization.

22201000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 462731.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 22201000021 its reverse (12000010222), we get a palindrome (34201010243).

The spelling of 22201000021 in words is "twenty-two billion, two hundred one million, twenty-one", and thus it is an aban number.