1220133366 has 24 divisors (see below), whose sum is σ = 2675476440. Its totient is φ = 401810496.

The previous prime is 1220133353. The next prime is 1220133379. The reversal of 1220133366 is 6633310221.

It is a happy number.

1220133366 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1220133353) and next prime (1220133379).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406851 + ... + 409838.

It is an arithmetic number, because the mean of its divisors is an integer number (111478185).

Almost surely, 2^1220133366 is an apocalyptic number.

1220133366 is an abundant number, since it is smaller than the sum of its proper divisors (1455343074).

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

1220133366 is a wasteful number, since it uses less digits than its factorization.

1220133366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816780 (or 816777 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 1220133366 is about 34930.4074697104. The cubic root of 1220133366 is about 1068.5686646690.

Adding to 1220133366 its reverse (6633310221), we get a palindrome (7853443587).

The spelling of 1220133366 in words is "one billion, two hundred twenty million, one hundred thirty-three thousand, three hundred sixty-six".