1220041201 has 4 divisors (see below), whose sum is σ = 1226362852. Its totient is φ = 1213719552.

The previous prime is 1220041183. The next prime is 1220041213. The reversal of 1220041201 is 1021400221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1021400221 = 103 ⋅9916507.

It can be written as a sum of positive squares in 2 ways, for example, as 155650576 + 1064390625 = 12476^2 + 32625^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220041201 - 2⁵ = 1220041169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220041271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3160536 + ... + 3160921.

It is an arithmetic number, because the mean of its divisors is an integer number (306590713).

Almost surely, 2^1220041201 is an apocalyptic number.

It is an amenable number.

1220041201 is a deficient number, since it is larger than the sum of its proper divisors (6321651).

1220041201 is an equidigital number, since it uses as much as digits as its factorization.

1220041201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6321650.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1220041201 is about 34929.0881787658. The cubic root of 1220041201 is about 1068.5417585636.

Adding to 1220041201 its reverse (1021400221), we get a palindrome (2241441422).

The spelling of 1220041201 in words is "one billion, two hundred twenty million, forty-one thousand, two hundred one".