1233133220 has 48 divisors (see below), whose sum is σ = 2893919616. Its totient is φ = 437472000.

The previous prime is 1233133141. The next prime is 1233133229. The reversal of 1233133220 is 223313321.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1233133192 and 1233133201.

It is not an unprimeable number, because it can be changed into a prime (1233133229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59336 + ... + 77375.

It is an arithmetic number, because the mean of its divisors is an integer number (60289992).

Almost surely, 2^1233133220 is an apocalyptic number.

1233133220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1233133220 is an abundant number, since it is smaller than the sum of its proper divisors (1660786396).

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

1233133220 is a wasteful number, since it uses less digits than its factorization.

1233133220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136772 (or 136770 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1233133220 is about 35115.9966397082. The cubic root of 1233133220 is about 1072.3502709710.

Adding to 1233133220 its reverse (223313321), we get a palindrome (1456446541).

The spelling of 1233133220 in words is "one billion, two hundred thirty-three million, one hundred thirty-three thousand, two hundred twenty".