1201133433 has 4 divisors (see below), whose sum is σ = 1601511248. Its totient is φ = 800755620.

The previous prime is 1201133429. The next prime is 1201133467. The reversal of 1201133433 is 3343311021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1201133433 - 2² = 1201133429 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201123433) 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, 200188903 + ... + 200188908.

It is an arithmetic number, because the mean of its divisors is an integer number (400377812).

Almost surely, 2^1201133433 is an apocalyptic number.

It is an amenable number.

1201133433 is a deficient number, since it is larger than the sum of its proper divisors (400377815).

1201133433 is an equidigital number, since it uses as much as digits as its factorization.

1201133433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400377814.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1201133433 is about 34657.3719863466. The cubic root of 1201133433 is about 1062.9930339815.

Adding to 1201133433 its reverse (3343311021), we get a palindrome (4544444454).

The spelling of 1201133433 in words is "one billion, two hundred one million, one hundred thirty-three thousand, four hundred thirty-three".