22003532321 has 4 divisors (see below), whose sum is σ = 22205399700. Its totient is φ = 21801664944.

The previous prime is 22003532273. The next prime is 22003532329. The reversal of 22003532321 is 12323530022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12323530022 = 2 ⋅6161765011.

It can be written as a sum of positive squares in 2 ways, for example, as 17999173921 + 4004358400 = 134161^2 + 63280^2 .

It is a cyclic number.

It is not a de Polignac number, because 22003532321 - 2²² = 21999338017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22003532329) 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, 100933526 + ... + 100933743.

It is an arithmetic number, because the mean of its divisors is an integer number (5551349925).

Almost surely, 2^22003532321 is an apocalyptic number.

It is an amenable number.

22003532321 is a deficient number, since it is larger than the sum of its proper divisors (201867379).

22003532321 is a wasteful number, since it uses less digits than its factorization.

22003532321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201867378.

The product of its (nonzero) digits is 2160, while the sum is 23.

The spelling of 22003532321 in words is "twenty-two billion, three million, five hundred thirty-two thousand, three hundred twenty-one".