2101056111 has 96 divisors (see below), whose sum is σ = 4000872960. Its totient is φ = 1058054400.

The previous prime is 2101056103. The next prime is 2101056151. The reversal of 2101056111 is 1116501012.

It is a happy number.

2101056111 is a `hidden beast` number, since 2 + 101 + 0 + 561 + 1 + 1 = 666.

It is not a de Polignac number, because 2101056111 - 2³ = 2101056103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101056101) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13382445 + ... + 13382601.

It is an arithmetic number, because the mean of its divisors is an integer number (41675760).

Almost surely, 2^2101056111 is an apocalyptic number.

2101056111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2101056111 is a deficient number, since it is larger than the sum of its proper divisors (1899816849).

2101056111 is a wasteful number, since it uses less digits than its factorization.

2101056111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 18.

The square root of 2101056111 is about 45837.2786168638. The cubic root of 2101056111 is about 1280.7938010333.

Adding to 2101056111 its reverse (1116501012), we get a palindrome (3217557123).

The spelling of 2101056111 in words is "two billion, one hundred one million, fifty-six thousand, one hundred eleven".