221321222297 has 8 divisors (see below), whose sum is σ = 263935867776. Its totient is φ = 181455908832.

The previous prime is 221321222273. The next prime is 221321222303. The reversal of 221321222297 is 792222123122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221321222297 - 2¹² = 221321218201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221321222797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687332828 + ... + 687333149.

It is an arithmetic number, because the mean of its divisors is an integer number (32991983472).

Almost surely, 2^221321222297 is an apocalyptic number.

It is an amenable number.

221321222297 is a deficient number, since it is larger than the sum of its proper divisors (42614645479).

221321222297 is a wasteful number, since it uses less digits than its factorization.

221321222297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1374666007.

The product of its digits is 24192, while the sum is 35.

The spelling of 221321222297 in words is "two hundred twenty-one billion, three hundred twenty-one million, two hundred twenty-two thousand, two hundred ninety-seven".