1161206227 has 4 divisors (see below), whose sum is σ = 1175905120. Its totient is φ = 1146507336.

The previous prime is 1161206177. The next prime is 1161206239. The reversal of 1161206227 is 7226021611.

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

It is a cyclic number.

It is not a de Polignac number, because 1161206227 - 2¹¹ = 1161204179 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1161206195 and 1161206204.

It is not an unprimeable number, because it can be changed into a prime (1161206257) 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, 7349328 + ... + 7349485.

It is an arithmetic number, because the mean of its divisors is an integer number (293976280).

Almost surely, 2^1161206227 is an apocalyptic number.

1161206227 is a deficient number, since it is larger than the sum of its proper divisors (14698893).

1161206227 is an equidigital number, since it uses as much as digits as its factorization.

1161206227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14698892.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1161206227 is about 34076.4761529123. The cubic root of 1161206227 is about 1051.0816448600.

Adding to 1161206227 its reverse (7226021611), we get a palindrome (8387227838).

The spelling of 1161206227 in words is "one billion, one hundred sixty-one million, two hundred six thousand, two hundred twenty-seven".