12000001021111 has 16 divisors (see below), whose sum is σ = 12526357615200. Its totient is φ = 11481544384128.

The previous prime is 12000001021103. The next prime is 12000001021133. The reversal of 12000001021111 is 11112010000021.

It is a cyclic number.

It is not a de Polignac number, because 12000001021111 - 2³ = 12000001021103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000001021181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1834741 + ... + 5231278.

It is an arithmetic number, because the mean of its divisors is an integer number (782897350950).

Almost surely, 2^{12000001021111} is an apocalyptic number.

12000001021111 is a deficient number, since it is larger than the sum of its proper divisors (526356594089).

12000001021111 is a wasteful number, since it uses less digits than its factorization.

12000001021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7066578.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 12000001021111 its reverse (11112010000021), we get a palindrome (23112011021132).

The spelling of 12000001021111 in words is "twelve trillion, one million, twenty-one thousand, one hundred eleven".