11812275227 has 4 divisors (see below), whose sum is σ = 11954591880. Its totient is φ = 11669958576.

The previous prime is 11812275203. The next prime is 11812275239. The reversal of 11812275227 is 72257221811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72257221811 = 16087 ⋅4491653.

It is a cyclic number.

It is not a de Polignac number, because 11812275227 - 2²² = 11808080923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11812277227) 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, 71158202 + ... + 71158367.

It is an arithmetic number, because the mean of its divisors is an integer number (2988647970).

Almost surely, 2^11812275227 is an apocalyptic number.

11812275227 is a deficient number, since it is larger than the sum of its proper divisors (142316653).

11812275227 is an equidigital number, since it uses as much as digits as its factorization.

11812275227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142316652.

The product of its digits is 31360, while the sum is 38.

The spelling of 11812275227 in words is "eleven billion, eight hundred twelve million, two hundred seventy-five thousand, two hundred twenty-seven".