3121221121303 has 4 divisors (see below), whose sum is σ = 3121296035760. Its totient is φ = 3121146206848.

The previous prime is 3121221121241. The next prime is 3121221121351. The reversal of 3121221121303 is 3031211221213.

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

It is a cyclic number.

It is not a de Polignac number, because 3121221121303 - 2⁹ = 3121221120791 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 (3121221121373) 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, 37394698 + ... + 37478071.

It is an arithmetic number, because the mean of its divisors is an integer number (780324008940).

Almost surely, 2^{3121221121303} is an apocalyptic number.

3121221121303 is a deficient number, since it is larger than the sum of its proper divisors (74914457).

3121221121303 is an equidigital number, since it uses as much as digits as its factorization.

3121221121303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74914456.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 3121221121303 its reverse (3031211221213), we get a palindrome (6152432342516).

The spelling of 3121221121303 in words is "three trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred twenty-one thousand, three hundred three".