1201111433 has 4 divisors (see below), whose sum is σ = 1201438980. Its totient is φ = 1200783888.

The previous prime is 1201111409. The next prime is 1201111447. The reversal of 1201111433 is 3341111021.

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 796819984 + 404291449 = 28228^2 + 20107^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201111433 - 2¹² = 1201107337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201111333) 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, 158210 + ... + 165627.

It is an arithmetic number, because the mean of its divisors is an integer number (300359745).

Almost surely, 2^1201111433 is an apocalyptic number.

It is an amenable number.

1201111433 is a deficient number, since it is larger than the sum of its proper divisors (327547).

1201111433 is an equidigital number, since it uses as much as digits as its factorization.

1201111433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327546.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1201111433 is about 34657.0545921029. The cubic root of 1201111433 is about 1062.9865440033.

Adding to 1201111433 its reverse (3341111021), we get a palindrome (4542222454).

The spelling of 1201111433 in words is "one billion, two hundred one million, one hundred eleven thousand, four hundred thirty-three".