221323020239 has 2 divisors, whose sum is σ = 221323020240. Its totient is φ = 221323020238.

The previous prime is 221323020203. The next prime is 221323020251. The reversal of 221323020239 is 932020323122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221323020239 - 2²⁸ = 221054584783 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221323010239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110661510119 + 110661510120.

It is an arithmetic number, because the mean of its divisors is an integer number (110661510120).

Almost surely, 2^221323020239 is an apocalyptic number.

221323020239 is a deficient number, since it is larger than the sum of its proper divisors (1).

221323020239 is an equidigital number, since it uses as much as digits as its factorization.

221323020239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 29.

The spelling of 221323020239 in words is "two hundred twenty-one billion, three hundred twenty-three million, twenty thousand, two hundred thirty-nine".