22239010021 has 4 divisors (see below), whose sum is σ = 22239366912. Its totient is φ = 22238653132.

The previous prime is 22239010019. The next prime is 22239010061. The reversal of 22239010021 is 12001093222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22239010021 - 2¹ = 22239010019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22239009974 and 22239010001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22239010061) 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, 57775 + ... + 218668.

It is an arithmetic number, because the mean of its divisors is an integer number (5559841728).

Almost surely, 2^22239010021 is an apocalyptic number.

It is an amenable number.

22239010021 is a deficient number, since it is larger than the sum of its proper divisors (356891).

22239010021 is an equidigital number, since it uses as much as digits as its factorization.

22239010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356890.

The product of its (nonzero) digits is 432, while the sum is 22.

The spelling of 22239010021 in words is "twenty-two billion, two hundred thirty-nine million, ten thousand, twenty-one".