1220445201 has 8 divisors (see below), whose sum is σ = 1630034784. Its totient is φ = 812242880.

The previous prime is 1220445139. The next prime is 1220445209. The reversal of 1220445201 is 1025440221.

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 1220445201 - 2¹⁴ = 1220428817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1220445209) 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, 344760 + ... + 348281.

It is an arithmetic number, because the mean of its divisors is an integer number (203754348).

Almost surely, 2^1220445201 is an apocalyptic number.

It is an amenable number.

1220445201 is a deficient number, since it is larger than the sum of its proper divisors (409589583).

1220445201 is an equidigital number, since it uses as much as digits as its factorization.

1220445201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693631.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1220445201 is about 34934.8708456178. The cubic root of 1220445201 is about 1068.6596898896.

Adding to 1220445201 its reverse (1025440221), we get a palindrome (2245885422).

The spelling of 1220445201 in words is "one billion, two hundred twenty million, four hundred forty-five thousand, two hundred one".