111100121220011 has 16 divisors (see below), whose sum is σ = 143290796739840. Its totient is φ = 83586298094880.

The previous prime is 111100121219957. The next prime is 111100121220019. The reversal of 111100121220011 is 110022121001111.

It is not a de Polignac number, because 111100121220011 - 2⁴² = 106702074708907 is a prime.

It is a super-2 number, since 2×111100121220011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111100121220019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24876872201 + ... + 24876876666.

It is an arithmetic number, because the mean of its divisors is an integer number (8955674796240).

Almost surely, 2^{111100121220011} is an apocalyptic number.

111100121220011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

111100121220011 is a deficient number, since it is larger than the sum of its proper divisors (32190675519829).

111100121220011 is a wasteful number, since it uses less digits than its factorization.

111100121220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49753748914.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 111100121220011 its reverse (110022121001111), we get a palindrome (221122242221122).

The spelling of 111100121220011 in words is "one hundred eleven trillion, one hundred billion, one hundred twenty-one million, two hundred twenty thousand, eleven".