2120078969 has 2 divisors, whose sum is σ = 2120078970. Its totient is φ = 2120078968.

The previous prime is 2120078953. The next prime is 2120078971. The reversal of 2120078969 is 9698700212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1917301369 + 202777600 = 43787^2 + 14240^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120078969 - 2⁴ = 2120078953 is a prime.

It is a super-2 number, since 2×2120078969² = 8989469669592205922, which contains 22 as substring.

Together with 2120078971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2120078929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060039484 + 1060039485.

It is an arithmetic number, because the mean of its divisors is an integer number (1060039485).

Almost surely, 2^2120078969 is an apocalyptic number.

It is an amenable number.

2120078969 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120078969 is an equidigital number, since it uses as much as digits as its factorization.

2120078969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 2120078969 is about 46044.3152734407. The cubic root of 2120078969 is about 1284.6476081555.

The spelling of 2120078969 in words is "two billion, one hundred twenty million, seventy-eight thousand, nine hundred sixty-nine".