221212322323 has 8 divisors (see below), whose sum is σ = 225217396800. Its totient is φ = 217243168128.

The previous prime is 221212322321. The next prime is 221212322329. The reversal of 221212322323 is 323223212122.

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 221212322323 - 2¹ = 221212322321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221212322321) 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, 8967643 + ... + 8992276.

It is an arithmetic number, because the mean of its divisors is an integer number (28152174600).

Almost surely, 2^221212322323 is an apocalyptic number.

221212322323 is a deficient number, since it is larger than the sum of its proper divisors (4005074477).

221212322323 is a wasteful number, since it uses less digits than its factorization.

221212322323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17960141.

The product of its digits is 3456, while the sum is 25.

Adding to 221212322323 its reverse (323223212122), we get a palindrome (544435534445).

The spelling of 221212322323 in words is "two hundred twenty-one billion, two hundred twelve million, three hundred twenty-two thousand, three hundred twenty-three".