11122110021 has 16 divisors (see below), whose sum is σ = 16192074240. Its totient is φ = 6734647920.

The previous prime is 11122110019. The next prime is 11122110029. The reversal of 11122110021 is 12001122111.

It is not a de Polignac number, because 11122110021 - 2¹ = 11122110019 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11122109979 and 11122110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122110029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113001 + ... + 187118.

It is an arithmetic number, because the mean of its divisors is an integer number (1012004640).

Almost surely, 2^11122110021 is an apocalyptic number.

11122110021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11122110021 is a deficient number, since it is larger than the sum of its proper divisors (5069964219).

11122110021 is a wasteful number, since it uses less digits than its factorization.

11122110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301256.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11122110021 its reverse (12001122111), we get a palindrome (23123232132).

The spelling of 11122110021 in words is "eleven billion, one hundred twenty-two million, one hundred ten thousand, twenty-one".