321221332093 has 2 divisors, whose sum is σ = 321221332094. Its totient is φ = 321221332092.

The previous prime is 321221332067. The next prime is 321221332121. The reversal of 321221332093 is 390233122123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 310647940164 + 10573391929 = 557358^2 + 102827^2 .

It is a cyclic number.

It is not a de Polignac number, because 321221332093 - 2⁹ = 321221331581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321221332793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160610666046 + 160610666047.

It is an arithmetic number, because the mean of its divisors is an integer number (160610666047).

Almost surely, 2^321221332093 is an apocalyptic number.

It is an amenable number.

321221332093 is a deficient number, since it is larger than the sum of its proper divisors (1).

321221332093 is an equidigital number, since it uses as much as digits as its factorization.

321221332093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 31.

The spelling of 321221332093 in words is "three hundred twenty-one billion, two hundred twenty-one million, three hundred thirty-two thousand, ninety-three".