2261111113 has 4 divisors (see below), whose sum is σ = 2261241360. Its totient is φ = 2260980868.

The previous prime is 2261111059. The next prime is 2261111119. The reversal of 2261111113 is 3111111622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2261111113 - 2⁹ = 2261110601 is a prime.

It is a super-2 number, since 2×2261111113² = 10225246930664197538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2261111119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34183 + ... + 75436.

It is an arithmetic number, because the mean of its divisors is an integer number (565310340).

Almost surely, 2^2261111113 is an apocalyptic number.

It is an amenable number.

2261111113 is a deficient number, since it is larger than the sum of its proper divisors (130247).

2261111113 is a wasteful number, since it uses less digits than its factorization.

2261111113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130246.

The product of its digits is 72, while the sum is 19.

The square root of 2261111113 is about 47551.1420788187. The cubic root of 2261111113 is about 1312.5241453820.

Adding to 2261111113 its reverse (3111111622), we get a palindrome (5372222735).

The spelling of 2261111113 in words is "two billion, two hundred sixty-one million, one hundred eleven thousand, one hundred thirteen".