2111244261 has 32 divisors (see below), whose sum is σ = 3392547840. Its totient is φ = 1140873984.

The previous prime is 2111244253. The next prime is 2111244271. The reversal of 2111244261 is 1624421112.

It is not a de Polignac number, because 2111244261 - 2³ = 2111244253 is a prime.

It is a super-2 number, since 2×2111244261² = 8914704659210872242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111244271) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232146 + ... + 241068.

It is an arithmetic number, because the mean of its divisors is an integer number (106017120).

Almost surely, 2^2111244261 is an apocalyptic number.

2111244261 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2111244261 is a deficient number, since it is larger than the sum of its proper divisors (1281303579).

2111244261 is a wasteful number, since it uses less digits than its factorization.

2111244261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9545.

The product of its digits is 768, while the sum is 24.

The square root of 2111244261 is about 45948.2781070194. The cubic root of 2111244261 is about 1282.8606797269.

Adding to 2111244261 its reverse (1624421112), we get a palindrome (3735665373).

The spelling of 2111244261 in words is "two billion, one hundred eleven million, two hundred forty-four thousand, two hundred sixty-one".