100111020111 has 6 divisors (see below), whose sum is σ = 144604806840. Its totient is φ = 66740680068.

The previous prime is 100111020091. The next prime is 100111020143. The reversal of 100111020111 is 111020111001.

It is not a de Polignac number, because 100111020111 - 2⁶ = 100111020047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 11123446679 = 100111020111 / (1 + 0 + 0 + 1 + 1 + 1 + 0 + 2 + 0 + 1 + 1 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 100111020093 and 100111020102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100111020011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5561723331 + ... + 5561723348.

It is an arithmetic number, because the mean of its divisors is an integer number (24100801140).

Almost surely, 2^100111020111 is an apocalyptic number.

100111020111 is a deficient number, since it is larger than the sum of its proper divisors (44493786729).

100111020111 is a wasteful number, since it uses less digits than its factorization.

100111020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11123446685 (or 11123446682 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 100111020111 its reverse (111020111001), we get a palindrome (211131131112).

The spelling of 100111020111 in words is "one hundred billion, one hundred eleven million, twenty thousand, one hundred eleven".