21000101112006 has 8 divisors (see below), whose sum is σ = 42000202224024. Its totient is φ = 7000033704000.

The previous prime is 21000101111989. The next prime is 21000101112031. The reversal of 21000101112006 is 60021110100012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

21000101112006 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1750008425995 + ... + 1750008426006.

It is an arithmetic number, because the mean of its divisors is an integer number (5250025278003).

Almost surely, 2^{21000101112006} is an apocalyptic number.

21000101112006 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21000101112006 is a wasteful number, since it uses less digits than its factorization.

21000101112006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3500016852006.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 21000101112006 its reverse (60021110100012), we get a palindrome (81021211212018).

The spelling of 21000101112006 in words is "twenty-one trillion, one hundred one million, one hundred twelve thousand, six".