3112012213221 has 8 divisors (see below), whose sum is σ = 4152645372960. Its totient is φ = 2073026931152.

The previous prime is 3112012213181. The next prime is 3112012213237. The reversal of 3112012213221 is 1223122102113.

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

It is a cyclic number.

It is not a de Polignac number, because 3112012213221 - 2¹⁸ = 3112011951077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3112012213241) 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, 411965010 + ... + 411972563.

It is an arithmetic number, because the mean of its divisors is an integer number (519080671620).

Almost surely, 2^{3112012213221} is an apocalyptic number.

It is an amenable number.

3112012213221 is a deficient number, since it is larger than the sum of its proper divisors (1040633159739).

3112012213221 is a wasteful number, since it uses less digits than its factorization.

3112012213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823938835.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 3112012213221 its reverse (1223122102113), we get a palindrome (4335134315334).

It can be divided in two parts, 3112012 and 213221, that added together give a palindrome (3325233).

The spelling of 3112012213221 in words is "three trillion, one hundred twelve billion, twelve million, two hundred thirteen thousand, two hundred twenty-one".