1220501333 has 8 divisors (see below), whose sum is σ = 1229729688. Its totient is φ = 1211298304.

The previous prime is 1220501327. The next prime is 1220501389. The reversal of 1220501333 is 3331050221.

It can be written as a sum of positive squares in 4 ways, for example, as 914881009 + 305620324 = 30247^2 + 17482^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220501333 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220501323) 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, 96641 + ... + 108537.

It is an arithmetic number, because the mean of its divisors is an integer number (153716211).

Almost surely, 2^1220501333 is an apocalyptic number.

It is an amenable number.

1220501333 is a deficient number, since it is larger than the sum of its proper divisors (9228355).

1220501333 is a wasteful number, since it uses less digits than its factorization.

1220501333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12663.

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1220501333 is about 34935.6742170521. The cubic root of 1220501333 is about 1068.6760732787.

Adding to 1220501333 its reverse (3331050221), we get a palindrome (4551551554).

The spelling of 1220501333 in words is "one billion, two hundred twenty million, five hundred one thousand, three hundred thirty-three".