1111222166 has 8 divisors (see below), whose sum is σ = 1695084840. Its totient is φ = 546193888.

The previous prime is 1111222141. The next prime is 1111222171. The reversal of 1111222166 is 6612221111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4708451 + ... + 4708686.

It is an arithmetic number, because the mean of its divisors is an integer number (211885605).

Almost surely, 2^1111222166 is an apocalyptic number.

1111222166 is a deficient number, since it is larger than the sum of its proper divisors (583862674).

1111222166 is an equidigital number, since it uses as much as digits as its factorization.

1111222166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9417198.

The product of its digits is 288, while the sum is 23.

The square root of 1111222166 is about 33334.9991150442. Note that the first 3 decimals coincide. The cubic root of 1111222166 is about 1035.7786748378.

Adding to 1111222166 its reverse (6612221111), we get a palindrome (7723443277).

The spelling of 1111222166 in words is "one billion, one hundred eleven million, two hundred twenty-two thousand, one hundred sixty-six".