11101211430021 has 6 divisors (see below), whose sum is σ = 16035083176710. Its totient is φ = 7400807620008.

The previous prime is 11101211430011. The next prime is 11101211430053. The reversal of 11101211430021 is 12003411210111.

11101211430021 is a `hidden beast` number, since 1 + 1 + 1 + 0 + 1 + 211 + 430 + 0 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9315283889025 + 1785927540996 = 3052095^2 + 1336386^2 .

It is not a de Polignac number, because 11101211430021 - 2⁵ = 11101211429989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11101211429976 and 11101211430003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101211430011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 616733968326 + ... + 616733968343.

It is an arithmetic number, because the mean of its divisors is an integer number (2672513862785).

Almost surely, 2^{11101211430021} is an apocalyptic number.

It is an amenable number.

11101211430021 is a deficient number, since it is larger than the sum of its proper divisors (4933871746689).

11101211430021 is a wasteful number, since it uses less digits than its factorization.

11101211430021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233467936675 (or 1233467936672 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 11101211430021 its reverse (12003411210111), we get a palindrome (23104622640132).

The spelling of 11101211430021 in words is "eleven trillion, one hundred one billion, two hundred eleven million, four hundred thirty thousand, twenty-one".