321211312231021 has 12 divisors (see below), whose sum is σ = 341249592600160. Its totient is φ = 302288142398400.

The previous prime is 321211312231003. The next prime is 321211312231067. The reversal of 321211312231021 is 120132213112123.

It is not a de Polignac number, because 321211312231021 - 2³³ = 321202722296429 is a prime.

It is a super-2 number, since 2×321211312231021² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321211312231321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49098081 + ... + 55254358.

Almost surely, 2^{321211312231021} is an apocalyptic number.

It is an amenable number.

321211312231021 is a deficient number, since it is larger than the sum of its proper divisors (20038280369139).

321211312231021 is a wasteful number, since it uses less digits than its factorization.

321211312231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104363124 (or 104363107 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

Adding to 321211312231021 its reverse (120132213112123), we get a palindrome (441343525343144).

The spelling of 321211312231021 in words is "three hundred twenty-one trillion, two hundred eleven billion, three hundred twelve million, two hundred thirty-one thousand, twenty-one".