221310222232312 has 32 divisors (see below), whose sum is σ = 429281041784400. Its totient is φ = 106835553748224.

The previous prime is 221310222232303. The next prime is 221310222232417. The reversal of 221310222232312 is 213232222013122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10815498 + ... + 23655769.

Almost surely, 2^{221310222232312} is an apocalyptic number.

It is an amenable number.

221310222232312 is a deficient number, since it is larger than the sum of its proper divisors (207970819552088).

221310222232312 is a wasteful number, since it uses less digits than its factorization.

221310222232312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34498975 (or 34498971 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 221310222232312 its reverse (213232222013122), we get a palindrome (434542444245434).

The spelling of 221310222232312 in words is "two hundred twenty-one trillion, three hundred ten billion, two hundred twenty-two million, two hundred thirty-two thousand, three hundred twelve".