221342132279 has 2 divisors, whose sum is σ = 221342132280. Its totient is φ = 221342132278.

The previous prime is 221342132269. The next prime is 221342132303. The reversal of 221342132279 is 972231243122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221342132279 - 2⁸ = 221342132023 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221342132269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110671066139 + 110671066140.

It is an arithmetic number, because the mean of its divisors is an integer number (110671066140).

Almost surely, 2^221342132279 is an apocalyptic number.

221342132279 is a deficient number, since it is larger than the sum of its proper divisors (1).

221342132279 is an equidigital number, since it uses as much as digits as its factorization.

221342132279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 38.

The spelling of 221342132279 in words is "two hundred twenty-one billion, three hundred forty-two million, one hundred thirty-two thousand, two hundred seventy-nine".