320331212101021 has 4 divisors (see below), whose sum is σ = 349452231382944. Its totient is φ = 291210192819100.

The previous prime is 320331212100953. The next prime is 320331212101067. The reversal of 320331212101021 is 120101212133023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320331212101021 - 2²³ = 320331203712413 is a prime.

It is a super-2 number, since 2×320331212101021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320331212100983 and 320331212101001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320331212101321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14560509640945 + ... + 14560509640966.

It is an arithmetic number, because the mean of its divisors is an integer number (87363057845736).

Almost surely, 2^{320331212101021} is an apocalyptic number.

It is an amenable number.

320331212101021 is a deficient number, since it is larger than the sum of its proper divisors (29121019281923).

320331212101021 is a wasteful number, since it uses less digits than its factorization.

320331212101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29121019281922.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 320331212101021 its reverse (120101212133023), we get a palindrome (440432424234044).

The spelling of 320331212101021 in words is "three hundred twenty trillion, three hundred thirty-one billion, two hundred twelve million, one hundred one thousand, twenty-one".