2105422117 has 2 divisors, whose sum is σ = 2105422118. Its totient is φ = 2105422116.

The previous prime is 2105422097. The next prime is 2105422141. The reversal of 2105422117 is 7112245012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2058073956 + 47348161 = 45366^2 + 6881^2 .

It is a cyclic number.

It is not a de Polignac number, because 2105422117 - 2¹⁹ = 2104897829 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2105422091 and 2105422100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2105422157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1052711058 + 1052711059.

It is an arithmetic number, because the mean of its divisors is an integer number (1052711059).

Almost surely, 2^2105422117 is an apocalyptic number.

It is an amenable number.

2105422117 is a deficient number, since it is larger than the sum of its proper divisors (1).

2105422117 is an equidigital number, since it uses as much as digits as its factorization.

2105422117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2105422117 is about 45884.8789581056. The cubic root of 2105422117 is about 1281.6803527197.

Adding to 2105422117 its reverse (7112245012), we get a palindrome (9217667129).

The spelling of 2105422117 in words is "two billion, one hundred five million, four hundred twenty-two thousand, one hundred seventeen".