11220120100221 has 4 divisors (see below), whose sum is σ = 14960160133632. Its totient is φ = 7480080066812.

The previous prime is 11220120100199. The next prime is 11220120100253. The reversal of 11220120100221 is 12200102102211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11220120100221 - 2¹⁸ = 11220119838077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11220120100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220120100421) 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, 1870020016701 + ... + 1870020016706.

It is an arithmetic number, because the mean of its divisors is an integer number (3740040033408).

Almost surely, 2^{11220120100221} is an apocalyptic number.

It is an amenable number.

11220120100221 is a deficient number, since it is larger than the sum of its proper divisors (3740040033411).

11220120100221 is an equidigital number, since it uses as much as digits as its factorization.

11220120100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3740040033410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11220120100221 its reverse (12200102102211), we get a palindrome (23420222202432).

The spelling of 11220120100221 in words is "eleven trillion, two hundred twenty billion, one hundred twenty million, one hundred thousand, two hundred twenty-one".