1161333227 has 4 divisors (see below), whose sum is σ = 1211826000. Its totient is φ = 1110840456.

The previous prime is 1161333193. The next prime is 1161333269. The reversal of 1161333227 is 7223331611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7223331611 = 1597 ⋅4523063.

It is a cyclic number.

It is not a de Polignac number, because 1161333227 - 2⁶ = 1161333163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1161333227.

It is not an unprimeable number, because it can be changed into a prime (1161333287) 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, 25246352 + ... + 25246397.

It is an arithmetic number, because the mean of its divisors is an integer number (302956500).

Almost surely, 2^1161333227 is an apocalyptic number.

1161333227 is a deficient number, since it is larger than the sum of its proper divisors (50492773).

1161333227 is an equidigital number, since it uses as much as digits as its factorization.

1161333227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50492772.

The product of its digits is 4536, while the sum is 29.

The square root of 1161333227 is about 34078.3395575547. The cubic root of 1161333227 is about 1051.1199620568.

Adding to 1161333227 its reverse (7223331611), we get a palindrome (8384664838).

The spelling of 1161333227 in words is "one billion, one hundred sixty-one million, three hundred thirty-three thousand, two hundred twenty-seven".