11101220999999 has 4 divisors (see below), whose sum is σ = 11955161076936. Its totient is φ = 10247280923064.

The previous prime is 11101220999989. The next prime is 11101221000013. The reversal of 11101220999999 is 99999902210111.

11101220999999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11101220999999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11101220999989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426970038449 + ... + 426970038474.

It is an arithmetic number, because the mean of its divisors is an integer number (2988790269234).

Almost surely, 2^{11101220999999} is an apocalyptic number.

11101220999999 is a deficient number, since it is larger than the sum of its proper divisors (853940076937).

11101220999999 is an equidigital number, since it uses as much as digits as its factorization.

11101220999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 853940076936.

The product of its (nonzero) digits is 2125764, while the sum is 62.

The spelling of 11101220999999 in words is "eleven trillion, one hundred one billion, two hundred twenty million, nine hundred ninety-nine thousand, nine hundred ninety-nine".