3121202045321 has 8 divisors (see below), whose sum is σ = 3478739122080. Its totient is φ = 2782991297088.

The previous prime is 3121202045267. The next prime is 3121202045323. The reversal of 3121202045321 is 1235402021213.

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-3121202045321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121202045323) 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, 4831581791 + ... + 4831582436.

It is an arithmetic number, because the mean of its divisors is an integer number (434842390260).

Almost surely, 2^{3121202045321} is an apocalyptic number.

It is an amenable number.

3121202045321 is a deficient number, since it is larger than the sum of its proper divisors (357537076759).

3121202045321 is a wasteful number, since it uses less digits than its factorization.

3121202045321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9663164263.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 3121202045321 its reverse (1235402021213), we get a palindrome (4356604066534).

The spelling of 3121202045321 in words is "three trillion, one hundred twenty-one billion, two hundred two million, forty-five thousand, three hundred twenty-one".