11100001112221 has 4 divisors (see below), whose sum is σ = 12685715556832. Its totient is φ = 9514286667612.

The previous prime is 11100001112219. The next prime is 11100001112281. The reversal of 11100001112221 is 12221110000111.

It is a happy number.

11100001112221 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, 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 11100001112221 - 2¹ = 11100001112219 is a prime.

It is a super-3 number, since 3×11100001112221³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100001112281) 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, 792857222295 + ... + 792857222308.

It is an arithmetic number, because the mean of its divisors is an integer number (3171428889208).

Almost surely, 2^{11100001112221} is an apocalyptic number.

It is an amenable number.

11100001112221 is a deficient number, since it is larger than the sum of its proper divisors (1585714444611).

11100001112221 is an equidigital number, since it uses as much as digits as its factorization.

11100001112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585714444610.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11100001112221 its reverse (12221110000111), we get a palindrome (23321111112332).

The spelling of 11100001112221 in words is "eleven trillion, one hundred billion, one million, one hundred twelve thousand, two hundred twenty-one".