321230012212 has 24 divisors (see below), whose sum is σ = 592172562240. Its totient is φ = 152050224960.

The previous prime is 321230012197. The next prime is 321230012221. The reversal of 321230012212 is 212210032123.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 321230012212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1442089 + ... + 1649872.

It is an arithmetic number, because the mean of its divisors is an integer number (24673856760).

Almost surely, 2^321230012212 is an apocalyptic number.

It is an amenable number.

321230012212 is a deficient number, since it is larger than the sum of its proper divisors (270942550028).

321230012212 is a wasteful number, since it uses less digits than its factorization.

321230012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3093351 (or 3093349 counting only the distinct ones).

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

Adding to 321230012212 its reverse (212210032123), we get a palindrome (533440044335).

The spelling of 321230012212 in words is "three hundred twenty-one billion, two hundred thirty million, twelve thousand, two hundred twelve".