11112130261 has 6 divisors (see below), whose sum is σ = 11122053410. Its totient is φ = 11102213808.

The previous prime is 11112130229. The next prime is 11112130273. The reversal of 11112130261 is 16203121111.

It can be written as a sum of positive squares in 3 ways, for example, as 5767643025 + 5344487236 = 75945^2 + 73106^2 .

It is not a de Polignac number, because 11112130261 - 2⁵ = 11112130229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112130201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4896235 + ... + 4898503.

Almost surely, 2^11112130261 is an apocalyptic number.

It is an amenable number.

11112130261 is a deficient number, since it is larger than the sum of its proper divisors (9923149).

11112130261 is an frugal number, since it uses more digits than its factorization.

11112130261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6695 (or 4482 counting only the distinct ones).

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

Adding to 11112130261 its reverse (16203121111), we get a palindrome (27315251372).

The spelling of 11112130261 in words is "eleven billion, one hundred twelve million, one hundred thirty thousand, two hundred sixty-one".