11240232221 has 4 divisors (see below), whose sum is σ = 11296716000. Its totient is φ = 11183748444.

The previous prime is 11240232217. The next prime is 11240232229. The reversal of 11240232221 is 12223204211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12223204211 = 30539 ⋅400249.

It is a cyclic number.

It is not a de Polignac number, because 11240232221 - 2² = 11240232217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11240232193 and 11240232202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11240232229) 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, 28241591 + ... + 28241988.

It is an arithmetic number, because the mean of its divisors is an integer number (2824179000).

Almost surely, 2^11240232221 is an apocalyptic number.

It is an amenable number.

11240232221 is a deficient number, since it is larger than the sum of its proper divisors (56483779).

11240232221 is an equidigital number, since it uses as much as digits as its factorization.

11240232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56483778.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 11240232221 its reverse (12223204211), we get a palindrome (23463436432).

The spelling of 11240232221 in words is "eleven billion, two hundred forty million, two hundred thirty-two thousand, two hundred twenty-one".