111000020101 has 4 divisors (see below), whose sum is σ = 111431927052. Its totient is φ = 110568113152.

The previous prime is 111000020077. The next prime is 111000020123. The reversal of 111000020101 is 101020000111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101020000111 = 31 ⋅3258709681.

It can be written as a sum of positive squares in 2 ways, for example, as 90857030625 + 20142989476 = 301425^2 + 141926^2 .

It is a cyclic number.

It is not a de Polignac number, because 111000020101 - 2¹¹ = 111000018053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000020191) 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, 215953090 + ... + 215953603.

It is an arithmetic number, because the mean of its divisors is an integer number (27857981763).

Almost surely, 2^111000020101 is an apocalyptic number.

It is an amenable number.

111000020101 is a deficient number, since it is larger than the sum of its proper divisors (431906951).

111000020101 is an equidigital number, since it uses as much as digits as its factorization.

111000020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431906950.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 111000020101 its reverse (101020000111), we get a palindrome (212020020212).

The spelling of 111000020101 in words is "one hundred eleven billion, twenty thousand, one hundred one".