392120321321 has 2 divisors, whose sum is σ = 392120321322. Its totient is φ = 392120321320.

The previous prime is 392120321291. The next prime is 392120321347. The reversal of 392120321321 is 123123021293.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207877636096 + 184242685225 = 455936^2 + 429235^2 .

It is an emirp because it is prime and its reverse (123123021293) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 392120321321 - 2¹⁰ = 392120320297 is a prime.

It is not a weakly prime, because it can be changed into another prime (392120321381) 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, 196060160660 + 196060160661.

It is an arithmetic number, because the mean of its divisors is an integer number (196060160661).

Almost surely, 2^392120321321 is an apocalyptic number.

It is an amenable number.

392120321321 is a deficient number, since it is larger than the sum of its proper divisors (1).

392120321321 is an equidigital number, since it uses as much as digits as its factorization.

392120321321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 392120321321 in words is "three hundred ninety-two billion, one hundred twenty million, three hundred twenty-one thousand, three hundred twenty-one".