20000010021000 has 128 divisors (see below), whose sum is σ = 62588554104960. Its totient is φ = 5317222944000.

The previous prime is 20000010020987. The next prime is 20000010021037. The reversal of 20000010021000 is 12001000002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (6).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a self number, because there is not a number n which added to its sum of digits gives 20000010021000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9077499 + ... + 11063498.

It is an arithmetic number, because the mean of its divisors is an integer number (488973078945).

Almost surely, 2^{20000010021000} is an apocalyptic number.

20000010021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000010021000 is an abundant number, since it is smaller than the sum of its proper divisors (42588544083960).

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

20000010021000 is a wasteful number, since it uses less digits than its factorization.

20000010021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20141352 (or 20141338 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 6.

Adding to 20000010021000 its reverse (12001000002), we get a palindrome (20012011021002).

The spelling of 20000010021000 in words is "twenty trillion, ten million, twenty-one thousand".