12001112000021 has 16 divisors (see below), whose sum is σ = 12310036373376. Its totient is φ = 11692968000000.

The previous prime is 12001111999999. The next prime is 12001112000081. The reversal of 12001112000021 is 12000021110021.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12001112000021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12001111999966 and 12001112000011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001112000081) 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, 120648176 + ... + 120747606.

It is an arithmetic number, because the mean of its divisors is an integer number (769377273336).

Almost surely, 2^{12001112000021} is an apocalyptic number.

It is an amenable number.

12001112000021 is a deficient number, since it is larger than the sum of its proper divisors (308924373355).

12001112000021 is a wasteful number, since it uses less digits than its factorization.

12001112000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103324.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 12001112000021 its reverse (12000021110021), we get a palindrome (24001133110042).

The spelling of 12001112000021 in words is "twelve trillion, one billion, one hundred twelve million, twenty-one", and thus it is an aban number.