111220101101 has 4 divisors (see below), whose sum is σ = 111359650332. Its totient is φ = 111080551872.

The previous prime is 111220101017. The next prime is 111220101119. The reversal of 111220101101 is 101101022111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101101022111 = 3001 ⋅33689111.

It can be written as a sum of positive squares in 2 ways, for example, as 24282988900 + 86937112201 = 155830^2 + 294851^2 .

It is a cyclic number.

It is not a de Polignac number, because 111220101101 - 2¹⁸ = 111219838957 is a prime.

It is a super-2 number, since 2×111220101101² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111220101301) 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, 69773420 + ... + 69775013.

It is an arithmetic number, because the mean of its divisors is an integer number (27839912583).

Almost surely, 2^111220101101 is an apocalyptic number.

It is an amenable number.

111220101101 is a deficient number, since it is larger than the sum of its proper divisors (139549231).

111220101101 is an equidigital number, since it uses as much as digits as its factorization.

111220101101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139549230.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 111220101101 its reverse (101101022111), we get a palindrome (212321123212).

The spelling of 111220101101 in words is "one hundred eleven billion, two hundred twenty million, one hundred one thousand, one hundred one".