2109122069 has 2 divisors, whose sum is σ = 2109122070. Its totient is φ = 2109122068.

The previous prime is 2109122033. The next prime is 2109122077. The reversal of 2109122069 is 9602219012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1882258225 + 226863844 = 43385^2 + 15062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2109122069 is a prime.

It is a super-2 number, since 2×2109122069² = 8896791803885681522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2109122009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054561034 + 1054561035.

It is an arithmetic number, because the mean of its divisors is an integer number (1054561035).

Almost surely, 2^2109122069 is an apocalyptic number.

It is an amenable number.

2109122069 is a deficient number, since it is larger than the sum of its proper divisors (1).

2109122069 is an equidigital number, since it uses as much as digits as its factorization.

2109122069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2109122069 is about 45925.1790306799. The cubic root of 2109122069 is about 1282.4306979969.

The spelling of 2109122069 in words is "two billion, one hundred nine million, one hundred twenty-two thousand, sixty-nine".