22032543221 has 4 divisors (see below), whose sum is σ = 23727354252. Its totient is φ = 20337732192.

The previous prime is 22032543209. The next prime is 22032543257. The reversal of 22032543221 is 12234523022.

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 7741536196 + 14291007025 = 87986^2 + 119545^2 .

It is a cyclic number.

It is not a de Polignac number, because 22032543221 - 2¹⁰ = 22032542197 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 (22032545221) 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, 847405496 + ... + 847405521.

It is an arithmetic number, because the mean of its divisors is an integer number (5931838563).

Almost surely, 2^22032543221 is an apocalyptic number.

It is an amenable number.

22032543221 is a deficient number, since it is larger than the sum of its proper divisors (1694811031).

22032543221 is a wasteful number, since it uses less digits than its factorization.

22032543221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694811030.

The product of its (nonzero) digits is 5760, while the sum is 26.

The spelling of 22032543221 in words is "twenty-two billion, thirty-two million, five hundred forty-three thousand, two hundred twenty-one".