11010011122221 has 4 divisors (see below), whose sum is σ = 14680014829632. Its totient is φ = 7340007414812.

The previous prime is 11010011122219. The next prime is 11010011122247. The reversal of 11010011122221 is 12222111001011.

It is a happy number.

11010011122221 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 11010011122221 - 2¹ = 11010011122219 is a prime.

It is a super-2 number, since 2×11010011122221² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11010011122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11010011122261) 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, 1835001853701 + ... + 1835001853706.

It is an arithmetic number, because the mean of its divisors is an integer number (3670003707408).

Almost surely, 2^{11010011122221} is an apocalyptic number.

It is an amenable number.

11010011122221 is a deficient number, since it is larger than the sum of its proper divisors (3670003707411).

11010011122221 is an equidigital number, since it uses as much as digits as its factorization.

11010011122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3670003707410.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11010011122221 its reverse (12222111001011), we get a palindrome (23232122123232).

It can be divided in two parts, 1101001 and 1122221, that added together give a palindrome (2223222).

The spelling of 11010011122221 in words is "eleven trillion, ten billion, eleven million, one hundred twenty-two thousand, two hundred twenty-one".