9223532221 has 4 divisors (see below), whose sum is σ = 9223997500. Its totient is φ = 9223066944.

The previous prime is 9223532209. The next prime is 9223532239. The reversal of 9223532221 is 1222353229.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4717766596 + 4505765625 = 68686^2 + 67125^2 .

It is a cyclic number.

It is not a de Polignac number, because 9223532221 - 2²⁵ = 9189977789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9223532251) 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, 201516 + ... + 243013.

It is an arithmetic number, because the mean of its divisors is an integer number (2305999375).

Almost surely, 2^9223532221 is an apocalyptic number.

It is an amenable number.

9223532221 is a deficient number, since it is larger than the sum of its proper divisors (465279).

9223532221 is a wasteful number, since it uses less digits than its factorization.

9223532221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465278.

The product of its digits is 12960, while the sum is 31.

The square root of 9223532221 is about 96039.2223052644. Note that the first 3 decimals coincide. The cubic root of 9223532221 is about 2097.1641404823.

The spelling of 9223532221 in words is "nine billion, two hundred twenty-three million, five hundred thirty-two thousand, two hundred twenty-one".