320120332122251 has 2 divisors, whose sum is σ = 320120332122252. Its totient is φ = 320120332122250.

The previous prime is 320120332122197. The next prime is 320120332122259. The reversal of 320120332122251 is 152221233021023.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320120332122251 - 2³⁸ = 319845454215307 is a prime.

It is not a weakly prime, because it can be changed into another prime (320120332122259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160060166061125 + 160060166061126.

It is an arithmetic number, because the mean of its divisors is an integer number (160060166061126).

Almost surely, 2^{320120332122251} is an apocalyptic number.

320120332122251 is a deficient number, since it is larger than the sum of its proper divisors (1).

320120332122251 is an equidigital number, since it uses as much as digits as its factorization.

320120332122251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 320120332122251 its reverse (152221233021023), we get a palindrome (472341565143274).

The spelling of 320120332122251 in words is "three hundred twenty trillion, one hundred twenty billion, three hundred thirty-two million, one hundred twenty-two thousand, two hundred fifty-one".