11000123221 has 8 divisors (see below), whose sum is σ = 11480673600. Its totient is φ = 10519763232.

The previous prime is 11000123219. The next prime is 11000123257. The reversal of 11000123221 is 12232100011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11000123221 - 2¹ = 11000123219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000123291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77505 + ... + 167353.

It is an arithmetic number, because the mean of its divisors is an integer number (1435084200).

Almost surely, 2^11000123221 is an apocalyptic number.

It is an amenable number.

11000123221 is a deficient number, since it is larger than the sum of its proper divisors (480550379).

11000123221 is an equidigital number, since it uses as much as digits as its factorization.

11000123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95195.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11000123221 its reverse (12232100011), we get a palindrome (23232223232).

The spelling of 11000123221 in words is "eleven billion, one hundred twenty-three thousand, two hundred twenty-one".