11221121111011 has 8 divisors (see below), whose sum is σ = 12838761154400. Its totient is φ = 9607136753088.

The previous prime is 11221121110981. The next prime is 11221121111023. The reversal of 11221121111011 is 11011112112211.

11221121111011 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 not a de Polignac number, because 11221121111011 - 2¹¹ = 11221121108963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11221121111041) 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, 913914786 + ... + 913927063.

It is an arithmetic number, because the mean of its divisors is an integer number (1604845144300).

Almost surely, 2^{11221121111011} is an apocalyptic number.

11221121111011 is a deficient number, since it is larger than the sum of its proper divisors (1617640043389).

11221121111011 is an equidigital number, since it uses as much as digits as its factorization.

11221121111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827842733.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 11221121111011 its reverse (11011112112211), we get a palindrome (22232233223222).

The spelling of 11221121111011 in words is "eleven trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, eleven".