3111021129989 has 2 divisors, whose sum is σ = 3111021129990. Its totient is φ = 3111021129988.

The previous prime is 3111021129959. The next prime is 3111021130069. The reversal of 3111021129989 is 9899211201113.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2450921753764 + 660099376225 = 1565542^2 + 812465^2 .

It is a cyclic number.

It is not a de Polignac number, because 3111021129989 - 2³⁶ = 3042301653253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3111021129959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555510564994 + 1555510564995.

It is an arithmetic number, because the mean of its divisors is an integer number (1555510564995).

Almost surely, 2^{3111021129989} is an apocalyptic number.

It is an amenable number.

3111021129989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111021129989 is an equidigital number, since it uses as much as digits as its factorization.

3111021129989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 47.

The spelling of 3111021129989 in words is "three trillion, one hundred eleven billion, twenty-one million, one hundred twenty-nine thousand, nine hundred eighty-nine".