2105722249 has 2 divisors, whose sum is σ = 2105722250. Its totient is φ = 2105722248.

The previous prime is 2105722237. The next prime is 2105722261. The reversal of 2105722249 is 9422275012.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (2105722237) and next prime (2105722261).

It can be written as a sum of positive squares in only one way, i.e., 1819875600 + 285846649 = 42660^2 + 16907^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105722249 - 2⁵ = 2105722217 is a prime.

It is not a weakly prime, because it can be changed into another prime (2105722279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052861124 + 1052861125.

It is an arithmetic number, because the mean of its divisors is an integer number (1052861125).

Almost surely, 2^2105722249 is an apocalyptic number.

It is an amenable number.

2105722249 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105722249 is an equidigital number, since it uses as much as digits as its factorization.

2105722249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 2105722249 is about 45888.1493307368. The cubic root of 2105722249 is about 1281.7412518315.

The spelling of 2105722249 in words is "two billion, one hundred five million, seven hundred twenty-two thousand, two hundred forty-nine".