100120111011 has 12 divisors (see below), whose sum is σ = 144750507720. Its totient is φ = 66685554720.

The previous prime is 100120111001. The next prime is 100120111019. The reversal of 100120111011 is 110111021001.

It is a de Polignac number, because none of the positive numbers 2^k-100120111011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 100120110984 and 100120111002.

It is not an unprimeable number, because it can be changed into a prime (100120111019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5088466 + ... + 5108103.

It is an arithmetic number, because the mean of its divisors is an integer number (12062542310).

Almost surely, 2^100120111011 is an apocalyptic number.

100120111011 is a deficient number, since it is larger than the sum of its proper divisors (44630396709).

100120111011 is a wasteful number, since it uses less digits than its factorization.

100120111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10197666 (or 10197663 counting only the distinct ones).

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

Adding to 100120111011 its reverse (110111021001), we get a palindrome (210231132012).

The spelling of 100120111011 in words is "one hundred billion, one hundred twenty million, one hundred eleven thousand, eleven".