222221002203221 has 16 divisors (see below), whose sum is σ = 275464771747200. Its totient is φ = 174898267768320.

The previous prime is 222221002203217. The next prime is 222221002203223. The reversal of 222221002203221 is 122302200122222.

It is a cyclic number.

It is not a de Polignac number, because 222221002203221 - 2² = 222221002203217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221002203223) 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, 22773207071 + ... + 22773216828.

It is an arithmetic number, because the mean of its divisors is an integer number (17216548234200).

Almost surely, 2^{222221002203221} is an apocalyptic number.

It is an amenable number.

222221002203221 is a deficient number, since it is larger than the sum of its proper divisors (53243769543979).

222221002203221 is a wasteful number, since it uses less digits than its factorization.

222221002203221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45546423964.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 222221002203221 its reverse (122302200122222), we get a palindrome (344523202325443).

The spelling of 222221002203221 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two million, two hundred three thousand, two hundred twenty-one".