1166212201 has 24 divisors (see below), whose sum is σ = 1482036480. Its totient is φ = 907452000.

The previous prime is 1166212111. The next prime is 1166212207. The reversal of 1166212201 is 1022126611.

It is not a de Polignac number, because 1166212201 - 2¹¹ = 1166210153 is a prime.

It is a super-2 number, since 2×1166212201² = 2720101795522528802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166212207) 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, 596776 + ... + 598726.

It is an arithmetic number, because the mean of its divisors is an integer number (61751520).

Almost surely, 2^1166212201 is an apocalyptic number.

1166212201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1166212201 is a deficient number, since it is larger than the sum of its proper divisors (315824279).

1166212201 is a wasteful number, since it uses less digits than its factorization.

1166212201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3085 (or 3078 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 1166212201 is about 34149.8492090375. The cubic root of 1166212201 is about 1052.5898881145.

Adding to 1166212201 its reverse (1022126611), we get a palindrome (2188338812).

The spelling of 1166212201 in words is "one billion, one hundred sixty-six million, two hundred twelve thousand, two hundred one".