12000021020010 has 48 divisors (see below), whose sum is σ = 31200427908000. Its totient is φ = 3199967322720.

The previous prime is 12000021019957. The next prime is 12000021020047. The reversal of 12000021020010 is 1002012000021.

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

It is a junction number, because it is equal to n+sod(n) for n = 12000021019974 and 12000021020001.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 7211605 + ... + 8718215.

It is an arithmetic number, because the mean of its divisors is an integer number (650008914750).

Almost surely, 2^{12000021020010} is an apocalyptic number.

12000021020010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12000021020010 is an abundant number, since it is smaller than the sum of its proper divisors (19200406887990).

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

12000021020010 is a wasteful number, since it uses less digits than its factorization.

12000021020010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595123 (or 1595120 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 12000021020010 its reverse (1002012000021), we get a palindrome (13002033020031).

The spelling of 12000021020010 in words is "twelve trillion, twenty-one million, twenty thousand, ten".