231321002212 has 12 divisors (see below), whose sum is σ = 404827279920. Its totient is φ = 115656065096.

The previous prime is 231321002189. The next prime is 231321002257. The reversal of 231321002212 is 212200123132.

It is a self number, because there is not a number n which added to its sum of digits gives 231321002212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 990262 + ... + 1201357.

It is an arithmetic number, because the mean of its divisors is an integer number (33735606660).

Almost surely, 2^231321002212 is an apocalyptic number.

It is an amenable number.

231321002212 is a deficient number, since it is larger than the sum of its proper divisors (173506277708).

231321002212 is a wasteful number, since it uses less digits than its factorization.

231321002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2218010 (or 2218008 counting only the distinct ones).

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

Adding to 231321002212 its reverse (212200123132), we get a palindrome (443521125344).

The spelling of 231321002212 in words is "two hundred thirty-one billion, three hundred twenty-one million, two thousand, two hundred twelve".