23221321233221 has 16 divisors (see below), whose sum is σ = 24270468868608. Its totient is φ = 22192627968000.

The previous prime is 23221321233217. The next prime is 23221321233223. The reversal of 23221321233221 is 12233212312232.

It is a cyclic number.

It is not a de Polignac number, because 23221321233221 - 2² = 23221321233217 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 (23221321233223) 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, 13345355 + ... + 14984696.

It is an arithmetic number, because the mean of its divisors is an integer number (1516904304288).

Almost surely, 2^{23221321233221} is an apocalyptic number.

It is an amenable number.

23221321233221 is a deficient number, since it is larger than the sum of its proper divisors (1049147635387).

23221321233221 is a wasteful number, since it uses less digits than its factorization.

23221321233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28330412.

The product of its digits is 10368, while the sum is 29.

Adding to 23221321233221 its reverse (12233212312232), we get a palindrome (35454533545453).

The spelling of 23221321233221 in words is "twenty-three trillion, two hundred twenty-one billion, three hundred twenty-one million, two hundred thirty-three thousand, two hundred twenty-one".