321012213 has 8 divisors (see below), whose sum is σ = 428573088. Its totient is φ = 213729744.

The previous prime is 321012193. The next prime is 321012227. The reversal of 321012213 is 312210123.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 321012213 - 2¹⁰ = 321011189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 321012192 and 321012201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321012283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66895 + ... + 71532.

It is an arithmetic number, because the mean of its divisors is an integer number (53571636).

Almost surely, 2^321012213 is an apocalyptic number.

It is an amenable number.

321012213 is a deficient number, since it is larger than the sum of its proper divisors (107560875).

321012213 is a wasteful number, since it uses less digits than its factorization.

321012213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139203.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 321012213 is about 17916.8136955208. The cubic root of 321012213 is about 684.7108112059.

Adding to 321012213 its reverse (312210123), we get a palindrome (633222336).

The spelling of 321012213 in words is "three hundred twenty-one million, twelve thousand, two hundred thirteen".