21133502216106 has 24 divisors (see below), whose sum is σ = 49167739850400. Its totient is φ = 6038143490232.

The previous prime is 21133502216069. The next prime is 21133502216117. The reversal of 21133502216106 is 60161220533112.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35941330006 + ... + 35941330593.

It is an arithmetic number, because the mean of its divisors is an integer number (2048655827100).

Almost surely, 2^{21133502216106} is an apocalyptic number.

21133502216106 is an abundant number, since it is smaller than the sum of its proper divisors (28034237634294).

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

21133502216106 is a wasteful number, since it uses less digits than its factorization.

21133502216106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71882660618 (or 71882660611 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

Adding to 21133502216106 its reverse (60161220533112), we get a palindrome (81294722749218).

The spelling of 21133502216106 in words is "twenty-one trillion, one hundred thirty-three billion, five hundred two million, two hundred sixteen thousand, one hundred six".