11122000021 has 16 divisors (see below), whose sum is σ = 12369526848. Its totient is φ = 9914112000.

The previous prime is 11121999997. The next prime is 11122000033. The reversal of 11122000021 is 12000022111.

It is a cyclic number.

It is not a de Polignac number, because 11122000021 - 2⁹ = 11121999509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11121999971 and 11122000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11122000081) 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, 1153621 + ... + 1163221.

It is an arithmetic number, because the mean of its divisors is an integer number (773095428).

Almost surely, 2^11122000021 is an apocalyptic number.

11122000021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11122000021 is a deficient number, since it is larger than the sum of its proper divisors (1247526827).

11122000021 is a wasteful number, since it uses less digits than its factorization.

11122000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11652.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11122000021 its reverse (12000022111), we get a palindrome (23122022132).

The spelling of 11122000021 in words is "eleven billion, one hundred twenty-two million, twenty-one", and thus it is an aban number.