222331220321 has 4 divisors (see below), whose sum is σ = 254092823232. Its totient is φ = 190569617412.

The previous prime is 222331220317. The next prime is 222331220329. The reversal of 222331220321 is 123022133222.

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, and also an emirpimes, since its reverse is a distinct semiprime: 123022133222 = 2 ⋅61511066611.

It is a cyclic number.

It is not a de Polignac number, because 222331220321 - 2² = 222331220317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222331220329) 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, 15880801445 + ... + 15880801458.

It is an arithmetic number, because the mean of its divisors is an integer number (63523205808).

Almost surely, 2^222331220321 is an apocalyptic number.

It is an amenable number.

222331220321 is a deficient number, since it is larger than the sum of its proper divisors (31761602911).

222331220321 is an equidigital number, since it uses as much as digits as its factorization.

222331220321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31761602910.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 222331220321 its reverse (123022133222), we get a palindrome (345353353543).

The spelling of 222331220321 in words is "two hundred twenty-two billion, three hundred thirty-one million, two hundred twenty thousand, three hundred twenty-one".