1220333564 has 24 divisors (see below), whose sum is σ = 2148022800. Its totient is φ = 606623360.

The previous prime is 1220333561. The next prime is 1220333581. The reversal of 1220333564 is 4653330221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220333561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 708224 + ... + 709944.

It is an arithmetic number, because the mean of its divisors is an integer number (89500950).

Almost surely, 2^1220333564 is an apocalyptic number.

It is an amenable number.

1220333564 is a deficient number, since it is larger than the sum of its proper divisors (927689236).

1220333564 is a wasteful number, since it uses less digits than its factorization.

1220333564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2653 (or 2651 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 1220333564 is about 34933.2730215764. The cubic root of 1220333564 is about 1068.6271046222.

Adding to 1220333564 its reverse (4653330221), we get a palindrome (5873663785).

The spelling of 1220333564 in words is "one billion, two hundred twenty million, three hundred thirty-three thousand, five hundred sixty-four".