221221332223329 has 8 divisors (see below), whose sum is σ = 297284309969920. Its totient is φ = 146319621312816.

The previous prime is 221221332223321. The next prime is 221221332223477. The reversal of 221221332223329 is 923322233122122.

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

It is not a de Polignac number, because 221221332223329 - 2³ = 221221332223321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221221332223321) 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, 290316708574 + ... + 290316709335.

It is an arithmetic number, because the mean of its divisors is an integer number (37160538746240).

Almost surely, 2^{221221332223329} is an apocalyptic number.

It is an amenable number.

221221332223329 is a deficient number, since it is larger than the sum of its proper divisors (76062977746591).

221221332223329 is a wasteful number, since it uses less digits than its factorization.

221221332223329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580633418039.

The product of its digits is 186624, while the sum is 39.

The spelling of 221221332223329 in words is "two hundred twenty-one trillion, two hundred twenty-one billion, three hundred thirty-two million, two hundred twenty-three thousand, three hundred twenty-nine".