12021100100111 has 4 divisors (see below), whose sum is σ = 12044173229424. Its totient is φ = 11998026970800.

The previous prime is 12021100100041. The next prime is 12021100100129. The reversal of 12021100100111 is 11100100112021.

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

It is a cyclic number.

It is not a de Polignac number, because 12021100100111 - 2³⁴ = 12003920230927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12021100100092 and 12021100100101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021100100311) 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, 11536563875 + ... + 11536564916.

It is an arithmetic number, because the mean of its divisors is an integer number (3011043307356).

Almost surely, 2^{12021100100111} is an apocalyptic number.

12021100100111 is a deficient number, since it is larger than the sum of its proper divisors (23073129313).

12021100100111 is an equidigital number, since it uses as much as digits as its factorization.

12021100100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23073129312.

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

Adding to 12021100100111 its reverse (11100100112021), we get a palindrome (23121200212132).

The spelling of 12021100100111 in words is "twelve trillion, twenty-one billion, one hundred million, one hundred thousand, one hundred eleven".