1220333333 has 12 divisors (see below), whose sum is σ = 1301115360. Its totient is φ = 1142392152.

The previous prime is 1220333329. The next prime is 1220333339. The reversal of 1220333333 is 3333330221.

It is not a de Polignac number, because 1220333333 - 2² = 1220333329 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

1220333333 is a modest number, since divided by 33333 gives 12203 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 1220333299 and 1220333308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220333339) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38798 + ... + 62816.

It is an arithmetic number, because the mean of its divisors is an integer number (108426280).

Almost surely, 2^1220333333 is an apocalyptic number.

It is an amenable number.

1220333333 is a deficient number, since it is larger than the sum of its proper divisors (80782027).

1220333333 is an equidigital number, since it uses as much as digits as its factorization.

1220333333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24136 (or 24089 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 23.

The square root of 1220333333 is about 34933.2697152729. The cubic root of 1220333333 is about 1068.6270371945.

Adding to 1220333333 its reverse (3333330221), we get a palindrome (4553663554).

The spelling of 1220333333 in words is "one billion, two hundred twenty million, three hundred thirty-three thousand, three hundred thirty-three".