101200111 has 4 divisors (see below), whose sum is σ = 104689800. Its totient is φ = 97710424.

The previous prime is 101200109. The next prime is 101200117. The reversal of 101200111 is 111002101.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101200111 - 2¹ = 101200109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101200094 and 101200103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101200117) 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, 1744801 + ... + 1744858.

It is an arithmetic number, because the mean of its divisors is an integer number (26172450).

Almost surely, 2^101200111 is an apocalyptic number.

101200111 is a deficient number, since it is larger than the sum of its proper divisors (3489689).

101200111 is an equidigital number, since it uses as much as digits as its factorization.

101200111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489688.

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

The square root of 101200111 is about 10059.8265889627. The cubic root of 101200111 is about 466.0083118486.

Adding to 101200111 its reverse (111002101), we get a palindrome (212202212).

The spelling of 101200111 in words is "one hundred one million, two hundred thousand, one hundred eleven".