11023112221 has 48 divisors (see below), whose sum is σ = 12746685952. Its totient is φ = 9517163040.

The previous prime is 11023112209. The next prime is 11023112267. The reversal of 11023112221 is 12221132011.

It is not a de Polignac number, because 11023112221 - 2⁵ = 11023112189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11023112195 and 11023112204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11023113221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35905750 + ... + 35906056.

Almost surely, 2^11023112221 is an apocalyptic number.

11023112221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11023112221 is a deficient number, since it is larger than the sum of its proper divisors (1723573731).

11023112221 is a wasteful number, since it uses less digits than its factorization.

11023112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542 (or 531 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11023112221 its reverse (12221132011), we get a palindrome (23244244232).

The spelling of 11023112221 in words is "eleven billion, twenty-three million, one hundred twelve thousand, two hundred twenty-one".