11111222011011 has 8 divisors (see below), whose sum is σ = 14815573780224. Its totient is φ = 7407175791240.

The previous prime is 11111222011009. The next prime is 11111222011037. The reversal of 11111222011011 is 11011022211111.

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

It is not a de Polignac number, because 11111222011011 - 2¹ = 11111222011009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11111222011091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76302495 + ... + 76447976.

It is an arithmetic number, because the mean of its divisors is an integer number (1851946722528).

Almost surely, 2^{11111222011011} is an apocalyptic number.

11111222011011 is a deficient number, since it is larger than the sum of its proper divisors (3704351769213).

11111222011011 is a wasteful number, since it uses less digits than its factorization.

11111222011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152774721.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11111222011011 its reverse (11011022211111), we get a palindrome (22122244222122).

The spelling of 11111222011011 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-two million, eleven thousand, eleven".