3121230021113 has 2 divisors, whose sum is σ = 3121230021114. Its totient is φ = 3121230021112.

The previous prime is 3121230021097. The next prime is 3121230021179. The reversal of 3121230021113 is 3111200321213.

It is a happy number.

3121230021113 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2493897907264 + 627332113849 = 1579208^2 + 792043^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121230021113 - 2⁴ = 3121230021097 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3121230021313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560615010556 + 1560615010557.

It is an arithmetic number, because the mean of its divisors is an integer number (1560615010557).

Almost surely, 2^{3121230021113} is an apocalyptic number.

It is an amenable number.

3121230021113 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121230021113 is an equidigital number, since it uses as much as digits as its factorization.

3121230021113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 3121230021113 its reverse (3111200321213), we get a palindrome (6232430342326).

The spelling of 3121230021113 in words is "three trillion, one hundred twenty-one billion, two hundred thirty million, twenty-one thousand, one hundred thirteen".