3121213033111 has 16 divisors (see below), whose sum is σ = 3209523508480. Its totient is φ = 3033112158720.

The previous prime is 3121213033061. The next prime is 3121213033123. The reversal of 3121213033111 is 1113303121213.

It is a cyclic number.

It is not a de Polignac number, because 3121213033111 - 2²⁹ = 3120676162199 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 (3121213033711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216188185 + ... + 216202621.

It is an arithmetic number, because the mean of its divisors is an integer number (200595219280).

Almost surely, 2^{3121213033111} is an apocalyptic number.

3121213033111 is a deficient number, since it is larger than the sum of its proper divisors (88310475369).

3121213033111 is a wasteful number, since it uses less digits than its factorization.

3121213033111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21274.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 3121213033111 its reverse (1113303121213), we get a palindrome (4234516154324).

The spelling of 3121213033111 in words is "three trillion, one hundred twenty-one billion, two hundred thirteen million, thirty-three thousand, one hundred eleven".