222012032221 has 4 divisors (see below), whose sum is σ = 253728036832. Its totient is φ = 190296027612.

The previous prime is 222012032213. The next prime is 222012032239. The reversal of 222012032221 is 122230210222.

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 222012032221 - 2³ = 222012032213 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 (222012032261) 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, 15858002295 + ... + 15858002308.

It is an arithmetic number, because the mean of its divisors is an integer number (63432009208).

Almost surely, 2^222012032221 is an apocalyptic number.

It is an amenable number.

222012032221 is a deficient number, since it is larger than the sum of its proper divisors (31716004611).

222012032221 is an equidigital number, since it uses as much as digits as its factorization.

222012032221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31716004610.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 222012032221 its reverse (122230210222), we get a palindrome (344242242443).

The spelling of 222012032221 in words is "two hundred twenty-two billion, twelve million, thirty-two thousand, two hundred twenty-one".