11225571611 has 4 divisors (see below), whose sum is σ = 11228061312. Its totient is φ = 11223081912.

The previous prime is 11225571593. The next prime is 11225571677. The reversal of 11225571611 is 11617552211.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11225571611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11225571011) 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, 1238075 + ... + 1247108.

It is an arithmetic number, because the mean of its divisors is an integer number (2807015328).

Almost surely, 2^11225571611 is an apocalyptic number.

11225571611 is a deficient number, since it is larger than the sum of its proper divisors (2489701).

11225571611 is an equidigital number, since it uses as much as digits as its factorization.

11225571611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489700.

The product of its digits is 4200, while the sum is 32.

The spelling of 11225571611 in words is "eleven billion, two hundred twenty-five million, five hundred seventy-one thousand, six hundred eleven".