212100232321 has 4 divisors (see below), whose sum is σ = 213285150000. Its totient is φ = 210915314644.

The previous prime is 212100232249. The next prime is 212100232343. The reversal of 212100232321 is 123232001212.

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 212100232321 - 2⁷ = 212100232193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212100232361) 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, 592458571 + ... + 592458928.

It is an arithmetic number, because the mean of its divisors is an integer number (53321287500).

Almost surely, 2^212100232321 is an apocalyptic number.

It is an amenable number.

212100232321 is a deficient number, since it is larger than the sum of its proper divisors (1184917679).

212100232321 is a wasteful number, since it uses less digits than its factorization.

212100232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184917678.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 212100232321 its reverse (123232001212), we get a palindrome (335332233533).

The spelling of 212100232321 in words is "two hundred twelve billion, one hundred million, two hundred thirty-two thousand, three hundred twenty-one".