12001111101 has 48 divisors (see below), whose sum is σ = 20309313024. Its totient is φ = 6685997472.

The previous prime is 12001111091. The next prime is 12001111141. The reversal of 12001111101 is 10111110021.

It is not a de Polignac number, because 12001111101 - 2¹⁵ = 12001078333 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001111141) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1586410 + ... + 1593956.

It is an arithmetic number, because the mean of its divisors is an integer number (423110688).

Almost surely, 2^12001111101 is an apocalyptic number.

It is an amenable number.

12001111101 is a deficient number, since it is larger than the sum of its proper divisors (8308201923).

12001111101 is a wasteful number, since it uses less digits than its factorization.

12001111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8190 (or 8187 counting only the distinct ones).

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

Adding to 12001111101 its reverse (10111110021), we get a palindrome (22112221122).

The spelling of 12001111101 in words is "twelve billion, one million, one hundred eleven thousand, one hundred one".