11000423221 has 4 divisors (see below), whose sum is σ = 11024923500. Its totient is φ = 10975922944.

The previous prime is 11000423219. The next prime is 11000423263. The reversal of 11000423221 is 12232400011.

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 4730000625 + 6270422596 = 68775^2 + 79186^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000423221 - 2¹ = 11000423219 is a prime.

It is a super-2 number, since 2×11000423221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11000423195 and 11000423204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11000423921) 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, 12249466 + ... + 12250363.

It is an arithmetic number, because the mean of its divisors is an integer number (2756230875).

Almost surely, 2^11000423221 is an apocalyptic number.

It is an amenable number.

11000423221 is a deficient number, since it is larger than the sum of its proper divisors (24500279).

11000423221 is an equidigital number, since it uses as much as digits as its factorization.

11000423221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24500278.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 11000423221 its reverse (12232400011), we get a palindrome (23232823232).

It can be divided in two parts, 110004 and 23221, that added together give a square (133225 = 365²).

The spelling of 11000423221 in words is "eleven billion, four hundred twenty-three thousand, two hundred twenty-one".