12000021110001 has 96 divisors (see below), whose sum is σ = 18053309514240. Its totient is φ = 7676740915200.

The previous prime is 12000021109963. The next prime is 12000021110017. The reversal of 12000021110001 is 10001112000021.

It is a happy number.

It is not a de Polignac number, because 12000021110001 - 2¹⁴ = 12000021093617 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (12000021110071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4516378465 + ... + 4516381121.

It is an arithmetic number, because the mean of its divisors is an integer number (188055307440).

Almost surely, 2^{12000021110001} is an apocalyptic number.

It is an amenable number.

12000021110001 is a deficient number, since it is larger than the sum of its proper divisors (6053288404239).

12000021110001 is a wasteful number, since it uses less digits than its factorization.

12000021110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3967 (or 3964 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 12000021110001 its reverse (10001112000021), we get a palindrome (22001133110022).

The spelling of 12000021110001 in words is "twelve trillion, twenty-one million, one hundred ten thousand, one".