11433122221 has 4 divisors (see below), whose sum is σ = 11436094944. Its totient is φ = 11430149500.

The previous prime is 11433122167. The next prime is 11433122237. The reversal of 11433122221 is 12222133411.

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 a cyclic number.

It is not a de Polignac number, because 11433122221 - 2⁹ = 11433121709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11433122192 and 11433122201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11433122291) 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, 1480585 + ... + 1488286.

It is an arithmetic number, because the mean of its divisors is an integer number (2859023736).

Almost surely, 2^11433122221 is an apocalyptic number.

It is an amenable number.

11433122221 is a deficient number, since it is larger than the sum of its proper divisors (2972723).

11433122221 is an equidigital number, since it uses as much as digits as its factorization.

11433122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2972722.

The product of its digits is 576, while the sum is 22.

Adding to 11433122221 its reverse (12222133411), we get a palindrome (23655255632).

The spelling of 11433122221 in words is "eleven billion, four hundred thirty-three million, one hundred twenty-two thousand, two hundred twenty-one".