1201133191 has 2 divisors, whose sum is σ = 1201133192. Its totient is φ = 1201133190.

The previous prime is 1201133179. The next prime is 1201133251. The reversal of 1201133191 is 1913311021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1201133191 - 2¹⁵ = 1201100423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201103191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600566595 + 600566596.

It is an arithmetic number, because the mean of its divisors is an integer number (600566596).

Almost surely, 2^1201133191 is an apocalyptic number.

1201133191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201133191 is an equidigital number, since it uses as much as digits as its factorization.

1201133191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 1201133191 is about 34657.3684950257. The cubic root of 1201133191 is about 1062.9929625922.

It can be divided in two parts, 120 and 1133191, that added together give a palindrome (1133311).

The spelling of 1201133191 in words is "one billion, two hundred one million, one hundred thirty-three thousand, one hundred ninety-one".