221234332279 has 2 divisors, whose sum is σ = 221234332280. Its totient is φ = 221234332278.

The previous prime is 221234332273. The next prime is 221234332303. The reversal of 221234332279 is 972233432122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221234332279 - 2⁵ = 221234332247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221234332273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110617166139 + 110617166140.

It is an arithmetic number, because the mean of its divisors is an integer number (110617166140).

Almost surely, 2^221234332279 is an apocalyptic number.

221234332279 is a deficient number, since it is larger than the sum of its proper divisors (1).

221234332279 is an equidigital number, since it uses as much as digits as its factorization.

221234332279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 40.

The spelling of 221234332279 in words is "two hundred twenty-one billion, two hundred thirty-four million, three hundred thirty-two thousand, two hundred seventy-nine".