111220111101 has 8 divisors (see below), whose sum is σ = 161774707104. Its totient is φ = 67406127920.

The previous prime is 111220111099. The next prime is 111220111103. The reversal of 111220111101 is 101111022111.

It is an interprime number because it is at equal distance from previous prime (111220111099) and next prime (111220111103).

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

It is a cyclic number.

It is not a de Polignac number, because 111220111101 - 2¹ = 111220111099 is a prime.

It is a super-2 number, since 2×111220111101² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220111103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1685153166 + ... + 1685153231.

It is an arithmetic number, because the mean of its divisors is an integer number (20221838388).

Almost surely, 2^111220111101 is an apocalyptic number.

111220111101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111220111101 is a deficient number, since it is larger than the sum of its proper divisors (50554596003).

111220111101 is a wasteful number, since it uses less digits than its factorization.

111220111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3370306411.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 111220111101 its reverse (101111022111), we get a palindrome (212331133212).

The spelling of 111220111101 in words is "one hundred eleven billion, two hundred twenty million, one hundred eleven thousand, one hundred one".