3143112213221 has 4 divisors (see below), whose sum is σ = 3175515432012. Its totient is φ = 3110708994432.

The previous prime is 3143112213193. The next prime is 3143112213247. The reversal of 3143112213221 is 1223122113413.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2349874384900 + 793237828321 = 1532930^2 + 890639^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3143112213221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3143112213421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16201609250 + ... + 16201609443.

It is an arithmetic number, because the mean of its divisors is an integer number (793878858003).

Almost surely, 2^{3143112213221} is an apocalyptic number.

It is an amenable number.

3143112213221 is a deficient number, since it is larger than the sum of its proper divisors (32403218791).

3143112213221 is an equidigital number, since it uses as much as digits as its factorization.

3143112213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32403218790.

The product of its digits is 1728, while the sum is 26.

Adding to 3143112213221 its reverse (1223122113413), we get a palindrome (4366234326634).

The spelling of 3143112213221 in words is "three trillion, one hundred forty-three billion, one hundred twelve million, two hundred thirteen thousand, two hundred twenty-one".