221323020233 has 16 divisors (see below), whose sum is σ = 254367457920. Its totient is φ = 188638004736.

The previous prime is 221323020203. The next prime is 221323020239. The reversal of 221323020233 is 332020323122.

It is a cyclic number.

It is not a de Polignac number, because 221323020233 - 2²² = 221318825929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221323020199 and 221323020208.

It is not an unprimeable number, because it can be changed into a prime (221323020239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 872441 + ... + 1097177.

It is an arithmetic number, because the mean of its divisors is an integer number (15897966120).

Almost surely, 2^221323020233 is an apocalyptic number.

It is an amenable number.

221323020233 is a deficient number, since it is larger than the sum of its proper divisors (33044437687).

221323020233 is a wasteful number, since it uses less digits than its factorization.

221323020233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225536.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 221323020233 its reverse (332020323122), we get a palindrome (553343343355).

The spelling of 221323020233 in words is "two hundred twenty-one billion, three hundred twenty-three million, twenty thousand, two hundred thirty-three".