2105722011 has 16 divisors (see below), whose sum is σ = 2882140160. Its totient is φ = 1367046720.

The previous prime is 2105721991. The next prime is 2105722057. The reversal of 2105722011 is 1102275012.

2105722011 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2105722011 - 2²⁹ = 1568851099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105722511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43555 + ... + 78156.

It is an arithmetic number, because the mean of its divisors is an integer number (180133760).

Almost surely, 2^2105722011 is an apocalyptic number.

2105722011 is a deficient number, since it is larger than the sum of its proper divisors (776418149).

2105722011 is a wasteful number, since it uses less digits than its factorization.

2105722011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121866.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 2105722011 is about 45888.1467374746. The cubic root of 2105722011 is about 1281.7412035417.

Adding to 2105722011 its reverse (1102275012), we get a palindrome (3207997023).

The spelling of 2105722011 in words is "two billion, one hundred five million, seven hundred twenty-two thousand, eleven".