12000100010021 has 4 divisors (see below), whose sum is σ = 12000804547692. Its totient is φ = 11999395472352.

The previous prime is 12000100010009. The next prime is 12000100010153. The reversal of 12000100010021 is 12001000100021.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1662781881121 + 10337318128900 = 1289489^2 + 3215170^2 .

It is a cyclic number.

It is not a de Polignac number, because 12000100010021 - 2⁶ = 12000100009957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12000100009990 and 12000100010008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000100010221) 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, 352243286 + ... + 352277351.

It is an arithmetic number, because the mean of its divisors is an integer number (3000201136923).

Almost surely, 2^{12000100010021} is an apocalyptic number.

It is an amenable number.

12000100010021 is a deficient number, since it is larger than the sum of its proper divisors (704537671).

12000100010021 is an equidigital number, since it uses as much as digits as its factorization.

12000100010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704537670.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 12000100010021 its reverse (12001000100021), we get a palindrome (24001100110042).

The spelling of 12000100010021 in words is "twelve trillion, one hundred million, ten thousand, twenty-one".