21066105202 has 8 divisors (see below), whose sum is σ = 31631046912. Its totient is φ = 10522422900.

The previous prime is 21066105173. The next prime is 21066105233. The reversal of 21066105202 is 20250166012.

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5312374 + ... + 5316337.

It is an arithmetic number, because the mean of its divisors is an integer number (3953880864).

Almost surely, 2^21066105202 is an apocalyptic number.

21066105202 is a deficient number, since it is larger than the sum of its proper divisors (10564941710).

21066105202 is a wasteful number, since it uses less digits than its factorization.

21066105202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10629704.

The product of its (nonzero) digits is 1440, while the sum is 25.

The spelling of 21066105202 in words is "twenty-one billion, sixty-six million, one hundred five thousand, two hundred two".