1220033166 has 16 divisors (see below), whose sum is σ = 2661890688. Its totient is φ = 369707000.

The previous prime is 1220033141. The next prime is 1220033167. The reversal of 1220033166 is 6613300221.

It is a happy number.

It is a super-2 number, since 2×1220033166² = 2976961852279967112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220033167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9242610 + ... + 9242741.

It is an arithmetic number, because the mean of its divisors is an integer number (166368168).

Almost surely, 2^1220033166 is an apocalyptic number.

1220033166 is an abundant number, since it is smaller than the sum of its proper divisors (1441857522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1220033166 is a wasteful number, since it uses less digits than its factorization.

1220033166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18485367.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1220033166 is about 34928.9731598282. The cubic root of 1220033166 is about 1068.5394128090.

Adding to 1220033166 its reverse (6613300221), we get a palindrome (7833333387).

The spelling of 1220033166 in words is "one billion, two hundred twenty million, thirty-three thousand, one hundred sixty-six".