3121100011121 has 4 divisors (see below), whose sum is σ = 3121108057200. Its totient is φ = 3121091965044.

The previous prime is 3121100011093. The next prime is 3121100011223. The reversal of 3121100011121 is 1211100011213.

3121100011121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121100011121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121100011096 and 3121100011105.

It is not an unprimeable number, because it can be changed into a prime (3121100010121) 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, 3410051 + ... + 4227368.

It is an arithmetic number, because the mean of its divisors is an integer number (780277014300).

Almost surely, 2^{3121100011121} is an apocalyptic number.

It is an amenable number.

3121100011121 is a deficient number, since it is larger than the sum of its proper divisors (8046079).

3121100011121 is an equidigital number, since it uses as much as digits as its factorization.

3121100011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8046078.

The product of its (nonzero) digits is 12, while the sum is 14.

Adding to 3121100011121 its reverse (1211100011213), we get a palindrome (4332200022334).

The spelling of 3121100011121 in words is "three trillion, one hundred twenty-one billion, one hundred million, eleven thousand, one hundred twenty-one".