101200211111 has 4 divisors (see below), whose sum is σ = 101447644800. Its totient is φ = 100952777424.

The previous prime is 101200211069. The next prime is 101200211173. The reversal of 101200211111 is 111112002101.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101200211111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101200211092 and 101200211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101200211611) 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, 123716231 + ... + 123717048.

It is an arithmetic number, because the mean of its divisors is an integer number (25361911200).

Almost surely, 2^101200211111 is an apocalyptic number.

101200211111 is a deficient number, since it is larger than the sum of its proper divisors (247433689).

101200211111 is an equidigital number, since it uses as much as digits as its factorization.

101200211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247433688.

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

Adding to 101200211111 its reverse (111112002101), we get a palindrome (212312213212).

The spelling of 101200211111 in words is "one hundred one billion, two hundred million, two hundred eleven thousand, one hundred eleven".