321212012 has 48 divisors (see below), whose sum is σ = 629070624. Its totient is φ = 142272000.

The previous prime is 321211993. The next prime is 321212039. The reversal of 321212012 is 210212123.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421712 + ... + 422472.

It is an arithmetic number, because the mean of its divisors is an integer number (13105638).

Almost surely, 2^321212012 is an apocalyptic number.

It is an amenable number.

321212012 is a deficient number, since it is larger than the sum of its proper divisors (307858612).

321212012 is a wasteful number, since it uses less digits than its factorization.

321212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010 (or 1008 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 321212012 is about 17922.3885684916. The cubic root of 321212012 is about 684.8528371238.

Adding to 321212012 its reverse (210212123), we get a palindrome (531424135).

The spelling of 321212012 in words is "three hundred twenty-one million, two hundred twelve thousand, twelve".