1201144203 has 72 divisors (see below), whose sum is σ = 2134080000. Its totient is φ = 647783136.

The previous prime is 1201144201. The next prime is 1201144213. The reversal of 1201144203 is 3024411021.

It is not a de Polignac number, because 1201144203 - 2¹ = 1201144201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201144201) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 800548 + ... + 802046.

It is an arithmetic number, because the mean of its divisors is an integer number (29640000).

Almost surely, 2^1201144203 is an apocalyptic number.

1201144203 is a deficient number, since it is larger than the sum of its proper divisors (932935797).

1201144203 is a wasteful number, since it uses less digits than its factorization.

1201144203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621 (or 1611 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1201144203 is about 34657.5273641961. The cubic root of 1201144203 is about 1062.9962110920.

Adding to 1201144203 its reverse (3024411021), we get a palindrome (4225555224).

The spelling of 1201144203 in words is "one billion, two hundred one million, one hundred forty-four thousand, two hundred three".