3121210111013 has 16 divisors (see below), whose sum is σ = 3166263509760. Its totient is φ = 3076299470400.

The previous prime is 3121210110929. The next prime is 3121210111067. The reversal of 3121210111013 is 3101110121213.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121210111013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121210110982 and 3121210111000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121210111093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131457323 + ... + 131481063.

It is an arithmetic number, because the mean of its divisors is an integer number (197891469360).

Almost surely, 2^{3121210111013} is an apocalyptic number.

It is an amenable number.

3121210111013 is a deficient number, since it is larger than the sum of its proper divisors (45053398747).

3121210111013 is a wasteful number, since it uses less digits than its factorization.

3121210111013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26668.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 3121210111013 its reverse (3101110121213), we get a palindrome (6222320232226).

The spelling of 3121210111013 in words is "three trillion, one hundred twenty-one billion, two hundred ten million, one hundred eleven thousand, thirteen".