1166022231 has 24 divisors (see below), whose sum is σ = 1801682304. Its totient is φ = 665105280.

The previous prime is 1166022203. The next prime is 1166022233. The reversal of 1166022231 is 1322206611.

It is not a de Polignac number, because 1166022231 - 2⁵ = 1166022199 is a prime.

It is a super-2 number, since 2×1166022231² = 2719215686372434722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166022233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51595 + ... + 70668.

It is an arithmetic number, because the mean of its divisors is an integer number (75070096).

Almost surely, 2^1166022231 is an apocalyptic number.

1166022231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1166022231 is a deficient number, since it is larger than the sum of its proper divisors (635660073).

1166022231 is a wasteful number, since it uses less digits than its factorization.

1166022231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122311 (or 122294 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1166022231 is about 34147.0676779134. The cubic root of 1166022231 is about 1052.5327311754.

Adding to 1166022231 its reverse (1322206611), we get a palindrome (2488228842).

The spelling of 1166022231 in words is "one billion, one hundred sixty-six million, twenty-two thousand, two hundred thirty-one".