1201133113 has 4 divisors (see below), whose sum is σ = 1271788020. Its totient is φ = 1130478208.

The previous prime is 1201133083. The next prime is 1201133123. The reversal of 1201133113 is 3113311021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 900180009 + 300953104 = 30003^2 + 17348^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201133113 - 2²⁵ = 1167578681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201133123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35327428 + ... + 35327461.

It is an arithmetic number, because the mean of its divisors is an integer number (317947005).

Almost surely, 2^1201133113 is an apocalyptic number.

It is an amenable number.

1201133113 is a deficient number, since it is larger than the sum of its proper divisors (70654907).

1201133113 is an equidigital number, since it uses as much as digits as its factorization.

1201133113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70654906.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1201133113 is about 34657.3673697239. The cubic root of 1201133113 is about 1062.9929395824.

Adding to 1201133113 its reverse (3113311021), we get a palindrome (4314444134).

The spelling of 1201133113 in words is "one billion, two hundred one million, one hundred thirty-three thousand, one hundred thirteen".