11200012000021 has 16 divisors (see below), whose sum is σ = 12181766623488. Its totient is φ = 10235444328000.

The previous prime is 11200012000013. The next prime is 11200012000057. The reversal of 11200012000021 is 12000021000211.

It is a cyclic number.

It is not a de Polignac number, because 11200012000021 - 2³ = 11200012000013 is a prime.

It is a super-2 number, since 2×11200012000021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11200011999971 and 11200012000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200012000081) 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, 20463490 + ... + 21003676.

It is an arithmetic number, because the mean of its divisors is an integer number (761360413968).

Almost surely, 2^{11200012000021} is an apocalyptic number.

It is an amenable number.

11200012000021 is a deficient number, since it is larger than the sum of its proper divisors (981754623467).

11200012000021 is a wasteful number, since it uses less digits than its factorization.

11200012000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556092.

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

Adding to 11200012000021 its reverse (12000021000211), we get a palindrome (23200033000232).

The spelling of 11200012000021 in words is "eleven trillion, two hundred billion, twelve million, twenty-one", and thus it is an aban number.