11110101122221 has 8 divisors (see below), whose sum is σ = 11493257281920. Its totient is φ = 10726948244208.

The previous prime is 11110101122201. The next prime is 11110101122243. The reversal of 11110101122221 is 12222110101111.

11110101122221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11110101122221 - 2³³ = 11101511187629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11110101122195 and 11110101122204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11110101122201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7496440 + ... + 8855326.

It is an arithmetic number, because the mean of its divisors is an integer number (1436657160240).

Almost surely, 2^{11110101122221} is an apocalyptic number.

It is an amenable number.

11110101122221 is a deficient number, since it is larger than the sum of its proper divisors (383156159699).

11110101122221 is a wasteful number, since it uses less digits than its factorization.

11110101122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1640843.

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

Adding to 11110101122221 its reverse (12222110101111), we get a palindrome (23332211223332).

The spelling of 11110101122221 in words is "eleven trillion, one hundred ten billion, one hundred one million, one hundred twenty-two thousand, two hundred twenty-one".