3120212989 has 2 divisors, whose sum is σ = 3120212990. Its totient is φ = 3120212988.

The previous prime is 3120212987. The next prime is 3120213001. The reversal of 3120212989 is 9892120213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2950119225 + 170093764 = 54315^2 + 13042^2 .

It is an emirp because it is prime and its reverse (9892120213) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3120212989 - 2¹ = 3120212987 is a prime.

Together with 3120212987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3120212987) 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 as a sum of consecutive naturals, namely, 1560106494 + 1560106495.

It is an arithmetic number, because the mean of its divisors is an integer number (1560106495).

Almost surely, 2^3120212989 is an apocalyptic number.

It is an amenable number.

3120212989 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120212989 is an equidigital number, since it uses as much as digits as its factorization.

3120212989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 3120212989 is about 55858.8666999251. The cubic root of 3120212989 is about 1461.2619646588.

The spelling of 3120212989 in words is "three billion, one hundred twenty million, two hundred twelve thousand, nine hundred eighty-nine".