1201123203 has 16 divisors (see below), whose sum is σ = 1830859776. Its totient is φ = 686139840.

The previous prime is 1201123199. The next prime is 1201123207. The reversal of 1201123203 is 3023211021.

It is an interprime number because it is at equal distance from previous prime (1201123199) and next prime (1201123207).

It is not a de Polignac number, because 1201123203 - 2² = 1201123199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201123207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79375 + ... + 93287.

It is an arithmetic number, because the mean of its divisors is an integer number (114428736).

Almost surely, 2^1201123203 is an apocalyptic number.

1201123203 is a deficient number, since it is larger than the sum of its proper divisors (629736573).

1201123203 is a wasteful number, since it uses less digits than its factorization.

1201123203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18034.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1201123203 is about 34657.2243983848. The cubic root of 1201123203 is about 1062.9900161515.

Adding to 1201123203 its reverse (3023211021), we get a palindrome (4224334224).

The spelling of 1201123203 in words is "one billion, two hundred one million, one hundred twenty-three thousand, two hundred three".