12000010021000 has 64 divisors (see below), whose sum is σ = 29048300190000. Its totient is φ = 4634486617600.

The previous prime is 12000010020983. The next prime is 12000010021007. The reversal of 12000010021000 is 12001000021.

It can be written as a sum of positive squares in 8 ways, for example, as 3316179397444 + 8683830623556 = 1821038^2 + 2946834^2 .

It is not an unprimeable number, because it can be changed into a prime (12000010021007) 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, 206867725 + ... + 206925724.

Almost surely, 2^{12000010021000} is an apocalyptic number.

12000010021000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12000010021000 is an abundant number, since it is smaller than the sum of its proper divisors (17048290169000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12000010021000 is a wasteful number, since it uses less digits than its factorization.

12000010021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413793499 (or 413793485 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

Adding to 12000010021000 its reverse (12001000021), we get a palindrome (12012011021021).

The spelling of 12000010021000 in words is "twelve trillion, ten million, twenty-one thousand".