3121220003213 has 32 divisors (see below), whose sum is σ = 3553853184000. Its totient is φ = 2719643990976.

The previous prime is 3121220003201. The next prime is 3121220003219. The reversal of 3121220003213 is 3123000221213.

It is not a de Polignac number, because 3121220003213 - 2²⁴ = 3121203225997 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 (3121220003219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6715838 + ... + 7165536.

It is an arithmetic number, because the mean of its divisors is an integer number (111057912000).

Almost surely, 2^{3121220003213} is an apocalyptic number.

It is an amenable number.

3121220003213 is a deficient number, since it is larger than the sum of its proper divisors (432633180787).

3121220003213 is a wasteful number, since it uses less digits than its factorization.

3121220003213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450041.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 3121220003213 its reverse (3123000221213), we get a palindrome (6244220224426).

The spelling of 3121220003213 in words is "three trillion, one hundred twenty-one billion, two hundred twenty million, three thousand, two hundred thirteen".