11200000021 has 12 divisors (see below), whose sum is σ = 13044682560. Its totient is φ = 9588128760.

The previous prime is 11199999953. The next prime is 11200000043. The reversal of 11200000021 is 12000000211.

It is not a de Polignac number, because 11200000021 - 2⁷ = 11199999893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200000051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 101181 + ... + 180658.

It is an arithmetic number, because the mean of its divisors is an integer number (1087056880).

Almost surely, 2^11200000021 is an apocalyptic number.

It is an amenable number.

11200000021 is a deficient number, since it is larger than the sum of its proper divisors (1844682539).

11200000021 is an equidigital number, since it uses as much as digits as its factorization.

11200000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282664 (or 282657 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 11200000021 its reverse (12000000211), we get a palindrome (23200000232).

The spelling of 11200000021 in words is "eleven billion, two hundred million, twenty-one", and thus it is an aban number.