3212120321 has 8 divisors (see below), whose sum is σ = 3236346624. Its totient is φ = 3187982160.

The previous prime is 3212120311. The next prime is 3212120333. The reversal of 3212120321 is 1230212123.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3212120321 is a prime.

It is a super-2 number, since 2×3212120321² = 20635433913162286082, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3212120321.

It is not an unprimeable number, because it can be changed into a prime (3212120311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52055 + ... + 95571.

It is an arithmetic number, because the mean of its divisors is an integer number (404543328).

Almost surely, 2^3212120321 is an apocalyptic number.

It is an amenable number.

3212120321 is a deficient number, since it is larger than the sum of its proper divisors (24226303).

3212120321 is a wasteful number, since it uses less digits than its factorization.

3212120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44071.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3212120321 is about 56675.5707602491. The cubic root of 3212120321 is about 1475.4707406424.

Adding to 3212120321 its reverse (1230212123), we get a palindrome (4442332444).

The spelling of 3212120321 in words is "three billion, two hundred twelve million, one hundred twenty thousand, three hundred twenty-one".