1201133211 has 4 divisors (see below), whose sum is σ = 1601510952. Its totient is φ = 800755472.

The previous prime is 1201133191. The next prime is 1201133251. The reversal of 1201133211 is 1123311021.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1201133211 - 2⁵ = 1201133179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1201133251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200188866 + ... + 200188871.

It is an arithmetic number, because the mean of its divisors is an integer number (400377738).

Almost surely, 2^1201133211 is an apocalyptic number.

1201133211 is a deficient number, since it is larger than the sum of its proper divisors (400377741).

1201133211 is an equidigital number, since it uses as much as digits as its factorization.

1201133211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400377740.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1201133211 is about 34657.3687835646. The cubic root of 1201133211 is about 1062.9929684922.

Adding to 1201133211 its reverse (1123311021), we get a palindrome (2324444232).

The spelling of 1201133211 in words is "one billion, two hundred one million, one hundred thirty-three thousand, two hundred eleven".