11110211200021 has 4 divisors (see below), whose sum is σ = 11110247290944. Its totient is φ = 11110175109100.

The previous prime is 11110211200009. The next prime is 11110211200037. The reversal of 11110211200021 is 12000211201111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11110211200021 - 2²⁹ = 11109674329109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11110211199974 and 11110211200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110211200001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17579695 + ... + 18200716.

It is an arithmetic number, because the mean of its divisors is an integer number (2777561822736).

Almost surely, 2^{11110211200021} is an apocalyptic number.

It is an amenable number.

11110211200021 is a deficient number, since it is larger than the sum of its proper divisors (36090923).

11110211200021 is an equidigital number, since it uses as much as digits as its factorization.

11110211200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36090922.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11110211200021 its reverse (12000211201111), we get a palindrome (23110422401132).

The spelling of 11110211200021 in words is "eleven trillion, one hundred ten billion, two hundred eleven million, two hundred thousand, twenty-one".