21000112020006 has 96 divisors (see below), whose sum is σ = 50064779064960. Its totient is φ = 5853310444800.

The previous prime is 21000112019993. The next prime is 21000112020007. The reversal of 21000112020006 is 60002021100012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000112020007) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2348515 + ... + 6893166.

It is an arithmetic number, because the mean of its divisors is an integer number (521508115260).

Almost surely, 2^{21000112020006} is an apocalyptic number.

21000112020006 is an abundant number, since it is smaller than the sum of its proper divisors (29064667044954).

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

21000112020006 is a wasteful number, since it uses less digits than its factorization.

21000112020006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9241890 (or 9241883 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 21000112020006 its reverse (60002021100012), we get a palindrome (81002133120018).

The spelling of 21000112020006 in words is "twenty-one trillion, one hundred twelve million, twenty thousand, six".