212320323210 has 64 divisors (see below), whose sum is σ = 512853793920. Its totient is φ = 56253968640.

The previous prime is 212320323199. The next prime is 212320323211. The reversal of 212320323210 is 12323023212.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (212320323211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26309056 + ... + 26317124.

It is an arithmetic number, because the mean of its divisors is an integer number (8013340530).

Almost surely, 2^212320323210 is an apocalyptic number.

212320323210 is an abundant number, since it is smaller than the sum of its proper divisors (300533470710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212320323210 is a wasteful number, since it uses less digits than its factorization.

212320323210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13623.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 212320323210 its reverse (12323023212), we get a palindrome (224643346422).

The spelling of 212320323210 in words is "two hundred twelve billion, three hundred twenty million, three hundred twenty-three thousand, two hundred ten".