11011110120221 has 32 divisors (see below), whose sum is σ = 11821516213248. Its totient is φ = 10220091171840.

The previous prime is 11011110120173. The next prime is 11011110120223. The reversal of 11011110120221 is 12202101111011.

11011110120221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11011110120221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011110120196 and 11011110120205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011110120223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 181638206 + ... + 181698816.

It is an arithmetic number, because the mean of its divisors is an integer number (369422381664).

Almost surely, 2^{11011110120221} is an apocalyptic number.

It is an amenable number.

11011110120221 is a deficient number, since it is larger than the sum of its proper divisors (810406093027).

11011110120221 is a wasteful number, since it uses less digits than its factorization.

11011110120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61301.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 11011110120221 its reverse (12202101111011), we get a palindrome (23213211231232).

The spelling of 11011110120221 in words is "eleven trillion, eleven billion, one hundred ten million, one hundred twenty thousand, two hundred twenty-one".