1220333201 has 8 divisors (see below), whose sum is σ = 1234728360. Its totient is φ = 1205953408.

The previous prime is 1220333183. The next prime is 1220333209. The reversal of 1220333201 is 1023330221.

It can be written as a sum of positive squares in 4 ways, for example, as 6507601 + 1213825600 = 2551^2 + 34840^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1220333201 - 2¹⁴ = 1220316817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1220333201.

It is not an unprimeable number, because it can be changed into a prime (1220333209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260855 + ... + 265491.

It is an arithmetic number, because the mean of its divisors is an integer number (154341045).

Almost surely, 2^1220333201 is an apocalyptic number.

It is an amenable number.

1220333201 is a deficient number, since it is larger than the sum of its proper divisors (14395159).

1220333201 is an equidigital number, since it uses as much as digits as its factorization.

1220333201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7683.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1220333201 is about 34933.2678259564. The cubic root of 1220333201 is about 1068.6269986643.

Adding to 1220333201 its reverse (1023330221), we get a palindrome (2243663422).

The spelling of 1220333201 in words is "one billion, two hundred twenty million, three hundred thirty-three thousand, two hundred one".