20000021021112 has 64 divisors (see below), whose sum is σ = 54551624376960. Its totient is φ = 6059933264000.

The previous prime is 20000021021111. The next prime is 20000021021161. The reversal of 20000021021112 is 21112012000002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000021021111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1882014 + ... + 6598637.

It is an arithmetic number, because the mean of its divisors is an integer number (852369130890).

Almost surely, 2^{20000021021112} is an apocalyptic number.

20000021021112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20000021021112 is an abundant number, since it is smaller than the sum of its proper divisors (34551603355848).

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

20000021021112 is a wasteful number, since it uses less digits than its factorization.

20000021021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8489604 (or 8489600 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20000021021112 its reverse (21112012000002), we get a palindrome (41112033021114).

The spelling of 20000021021112 in words is "twenty trillion, twenty-one million, twenty-one thousand, one hundred twelve".