11220121019993 has 2 divisors, whose sum is σ = 11220121019994. Its totient is φ = 11220121019992.

The previous prime is 11220121019951. The next prime is 11220121020007. The reversal of 11220121019993 is 39991012102211.

11220121019993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9619599996304 + 1600521023689 = 3101548^2 + 1265117^2 .

It is a cyclic number.

It is not a de Polignac number, because 11220121019993 - 2¹⁶ = 11220120954457 is a prime.

It is a super-2 number, since 2×11220121019993² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11220121019993.

It is not a weakly prime, because it can be changed into another prime (11220121019903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610060509996 + 5610060509997.

It is an arithmetic number, because the mean of its divisors is an integer number (5610060509997).

Almost surely, 2^{11220121019993} is an apocalyptic number.

It is an amenable number.

11220121019993 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220121019993 is an equidigital number, since it uses as much as digits as its factorization.

11220121019993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 41.

The spelling of 11220121019993 in words is "eleven trillion, two hundred twenty billion, one hundred twenty-one million, nineteen thousand, nine hundred ninety-three".