12100001111 has 8 divisors (see below), whose sum is σ = 13214221200. Its totient is φ = 10988151040.

The previous prime is 12100001101. The next prime is 12100001129. The reversal of 12100001111 is 11110000121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12100001111 - 2¹⁴ = 12099984727 is a prime.

It is a Duffinian number.

12100001111 is a modest number, since divided by 1111 gives 121 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100001101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581816 + ... + 602253.

It is an arithmetic number, because the mean of its divisors is an integer number (1651777650).

Almost surely, 2^12100001111 is an apocalyptic number.

12100001111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12100001111 is a deficient number, since it is larger than the sum of its proper divisors (1114220089).

12100001111 is a wasteful number, since it uses less digits than its factorization.

12100001111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1185009.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 12100001111 its reverse (11110000121), we get a palindrome (23210001232).

The spelling of 12100001111 in words is "twelve billion, one hundred million, one thousand, one hundred eleven".