212023313321 has 16 divisors (see below), whose sum is σ = 222199855104. Its totient is φ = 201927767184.

The previous prime is 212023313233. The next prime is 212023313339. The reversal of 212023313321 is 123313320212.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212023313321 is a prime.

It is a super-2 number, since 2×212023313321² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212023312321) 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, 8625170 + ... + 8649716.

It is an arithmetic number, because the mean of its divisors is an integer number (13887490944).

Almost surely, 2^212023313321 is an apocalyptic number.

It is an amenable number.

212023313321 is a deficient number, since it is larger than the sum of its proper divisors (10176541783).

212023313321 is a wasteful number, since it uses less digits than its factorization.

212023313321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26180.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 212023313321 its reverse (123313320212), we get a palindrome (335336633533).

The spelling of 212023313321 in words is "two hundred twelve billion, twenty-three million, three hundred thirteen thousand, three hundred twenty-one".