212321200331 has 4 divisors (see below), whose sum is σ = 214382571312. Its totient is φ = 210259829352.

The previous prime is 212321200321. The next prime is 212321200393. The reversal of 212321200331 is 133002123212.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212321200331 is a prime.

It is a super-2 number, since 2×212321200331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212321200321) 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, 1030685336 + ... + 1030685541.

It is an arithmetic number, because the mean of its divisors is an integer number (53595642828).

Almost surely, 2^212321200331 is an apocalyptic number.

212321200331 is a deficient number, since it is larger than the sum of its proper divisors (2061370981).

212321200331 is a wasteful number, since it uses less digits than its factorization.

212321200331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061370980.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212321200331 its reverse (133002123212), we get a palindrome (345323323543).

The spelling of 212321200331 in words is "two hundred twelve billion, three hundred twenty-one million, two hundred thousand, three hundred thirty-one".