11100222111021 has 16 divisors (see below), whose sum is σ = 14908334850048. Its totient is φ = 7346287839600.

The previous prime is 11100222111007. The next prime is 11100222111053. The reversal of 11100222111021 is 12011122200111.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11100222111021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100222111061) 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 15 ways as a sum of consecutive naturals, for example, 19610185 + ... + 20168286.

It is an arithmetic number, because the mean of its divisors is an integer number (931770928128).

Almost surely, 2^{11100222111021} is an apocalyptic number.

It is an amenable number.

11100222111021 is a deficient number, since it is larger than the sum of its proper divisors (3808112739027).

11100222111021 is a wasteful number, since it uses less digits than its factorization.

11100222111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39779152.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11100222111021 its reverse (12011122200111), we get a palindrome (23111344311132).

The spelling of 11100222111021 in words is "eleven trillion, one hundred billion, two hundred twenty-two million, one hundred eleven thousand, twenty-one".