332123320721 has 2 divisors, whose sum is σ = 332123320722. Its totient is φ = 332123320720.

The previous prime is 332123320673. The next prime is 332123320723. The reversal of 332123320721 is 127023321233.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208402293121 + 123721027600 = 456511^2 + 351740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-332123320721 is a prime.

It is a super-2 number, since 2×332123320721² (a number of 24 digits) contains 22 as substring.

Together with 332123320723, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (332123320723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166061660360 + 166061660361.

It is an arithmetic number, because the mean of its divisors is an integer number (166061660361).

Almost surely, 2^332123320721 is an apocalyptic number.

It is an amenable number.

332123320721 is a deficient number, since it is larger than the sum of its proper divisors (1).

332123320721 is an equidigital number, since it uses as much as digits as its factorization.

332123320721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 29.

Adding to 332123320721 its reverse (127023321233), we get a palindrome (459146641954).

The spelling of 332123320721 in words is "three hundred thirty-two billion, one hundred twenty-three million, three hundred twenty thousand, seven hundred twenty-one".