11102000021 has 32 divisors (see below), whose sum is σ = 13354598400. Its totient is φ = 9219955248.

The previous prime is 11102000017. The next prime is 11102000027. The reversal of 11102000021 is 12000020111.

It is not a de Polignac number, because 11102000021 - 2² = 11102000017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11101999972 and 11102000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11102000027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1870160 + ... + 1876086.

It is an arithmetic number, because the mean of its divisors is an integer number (417331200).

Almost surely, 2^11102000021 is an apocalyptic number.

It is an amenable number.

11102000021 is a deficient number, since it is larger than the sum of its proper divisors (2252598379).

11102000021 is an equidigital number, since it uses as much as digits as its factorization.

11102000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6118 (or 6104 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 11102000021 its reverse (12000020111), we get a palindrome (23102020132).

The spelling of 11102000021 in words is "eleven billion, one hundred two million, twenty-one", and thus it is an aban number.