212331330321 has 16 divisors (see below), whose sum is σ = 308858170368. Its totient is φ = 128680405200.

The previous prime is 212331330293. The next prime is 212331330373. The reversal of 212331330321 is 123033133212.

It is not a de Polignac number, because 212331330321 - 2⁹ = 212331329809 is a prime.

It is a super-2 number, since 2×212331330321² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212331330291 and 212331330300.

It is not an unprimeable number, because it can be changed into a prime (212331330121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 785556 + ... + 1020666.

It is an arithmetic number, because the mean of its divisors is an integer number (19303635648).

Almost surely, 2^212331330321 is an apocalyptic number.

It is an amenable number.

212331330321 is a deficient number, since it is larger than the sum of its proper divisors (96526840047).

212331330321 is a wasteful number, since it uses less digits than its factorization.

212331330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262492.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 212331330321 its reverse (123033133212), we get a palindrome (335364463533).

The spelling of 212331330321 in words is "two hundred twelve billion, three hundred thirty-one million, three hundred thirty thousand, three hundred twenty-one".