1133201220 has 48 divisors (see below), whose sum is σ = 3258725568. Its totient is φ = 294019200.

The previous prime is 1133201219. The next prime is 1133201263. The reversal of 1133201220 is 221023311.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1133201220.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253006 + ... + 257445.

It is an arithmetic number, because the mean of its divisors is an integer number (67890116).

Almost surely, 2^1133201220 is an apocalyptic number.

1133201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1133201220 is an abundant number, since it is smaller than the sum of its proper divisors (2125524348).

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

1133201220 is a wasteful number, since it uses less digits than its factorization.

1133201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510500 (or 510498 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1133201220 is about 33663.0542286347. The cubic root of 1133201220 is about 1042.5630875795.

Adding to 1133201220 its reverse (221023311), we get a palindrome (1354224531).

The spelling of 1133201220 in words is "one billion, one hundred thirty-three million, two hundred one thousand, two hundred twenty".