11200111120021 has 8 divisors (see below), whose sum is σ = 11316231317720. Its totient is φ = 11084004292608.

The previous prime is 11200111120019. The next prime is 11200111120031. The reversal of 11200111120021 is 12002111100211.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 620606781796 + 10579504338225 = 787786^2 + 3252615^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11200111120021 - 2¹ = 11200111120019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11200111119983 and 11200111120010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11200111120031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1654116 + ... + 5013613.

It is an arithmetic number, because the mean of its divisors is an integer number (1414528914715).

Almost surely, 2^{11200111120021} is an apocalyptic number.

It is an amenable number.

11200111120021 is a deficient number, since it is larger than the sum of its proper divisors (116120197699).

11200111120021 is an equidigital number, since it uses as much as digits as its factorization.

11200111120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6685143.

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

Adding to 11200111120021 its reverse (12002111100211), we get a palindrome (23202222220232).

The spelling of 11200111120021 in words is "eleven trillion, two hundred billion, one hundred eleven million, one hundred twenty thousand, twenty-one".