221322311087 has 2 divisors, whose sum is σ = 221322311088. Its totient is φ = 221322311086.

The previous prime is 221322311057. The next prime is 221322311137. The reversal of 221322311087 is 780113223122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221322311087 - 2⁸ = 221322310831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221322311017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110661155543 + 110661155544.

It is an arithmetic number, because the mean of its divisors is an integer number (110661155544).

Almost surely, 2^221322311087 is an apocalyptic number.

221322311087 is a deficient number, since it is larger than the sum of its proper divisors (1).

221322311087 is an equidigital number, since it uses as much as digits as its factorization.

221322311087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 221322311087 in words is "two hundred twenty-one billion, three hundred twenty-two million, three hundred eleven thousand, eighty-seven".