1200023201 has 12 divisors (see below), whose sum is σ = 1300796208. Its totient is φ = 1106552304.

The previous prime is 1200023179. The next prime is 1200023239. The reversal of 1200023201 is 1023200021.

It is a happy number.

It is not a de Polignac number, because 1200023201 - 2¹⁰ = 1200022177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1200023291) 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, 186626 + ... + 192948.

It is an arithmetic number, because the mean of its divisors is an integer number (108399684).

Almost surely, 2^1200023201 is an apocalyptic number.

It is an amenable number.

1200023201 is a deficient number, since it is larger than the sum of its proper divisors (100773007).

1200023201 is a wasteful number, since it uses less digits than its factorization.

1200023201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7472 (or 7459 counting only the distinct ones).

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

The square root of 1200023201 is about 34641.3510273488. The cubic root of 1200023201 is about 1062.6654176778.

Adding to 1200023201 its reverse (1023200021), we get a palindrome (2223223222).

The spelling of 1200023201 in words is "one billion, two hundred million, twenty-three thousand, two hundred one".