1220003201 has 8 divisors (see below), whose sum is σ = 1238911584. Its totient is φ = 1201115520.

The previous prime is 1220003177. The next prime is 1220003203. The reversal of 1220003201 is 1023000221.

It is a happy number.

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 1220003201 - 2¹⁸ = 1219741057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220003203) 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, 148286 + ... + 156296.

It is an arithmetic number, because the mean of its divisors is an integer number (154863948).

Almost surely, 2^1220003201 is an apocalyptic number.

It is an amenable number.

1220003201 is a deficient number, since it is larger than the sum of its proper divisors (18908383).

1220003201 is an equidigital number, since it uses as much as digits as its factorization.

1220003201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10351.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1220003201 is about 34928.5442152976. The cubic root of 1220003201 is about 1068.5306646737.

Adding to 1220003201 its reverse (1023000221), we get a palindrome (2243003422).

The spelling of 1220003201 in words is "one billion, two hundred twenty million, three thousand, two hundred one".