332012020209721 has 2 divisors, whose sum is σ = 332012020209722. Its totient is φ = 332012020209720.

The previous prime is 332012020209691. The next prime is 332012020209757. The reversal of 332012020209721 is 127902020210233.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 257076681699321 + 74935338510400 = 16033611^2 + 8656520^2 .

It is an emirp because it is prime and its reverse (127902020210233) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 332012020209721 - 2¹⁵ = 332012020176953 is a prime.

It is a super-2 number, since 2×332012020209721² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (332012020209791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166006010104860 + 166006010104861.

It is an arithmetic number, because the mean of its divisors is an integer number (166006010104861).

Almost surely, 2^{332012020209721} is an apocalyptic number.

It is an amenable number.

332012020209721 is a deficient number, since it is larger than the sum of its proper divisors (1).

332012020209721 is an equidigital number, since it uses as much as digits as its factorization.

332012020209721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

Adding to 332012020209721 its reverse (127902020210233), we get a palindrome (459914040419954).

The spelling of 332012020209721 in words is "three hundred thirty-two trillion, twelve billion, twenty million, two hundred nine thousand, seven hundred twenty-one".