21102200202 has 8 divisors (see below), whose sum is σ = 42204400416. Its totient is φ = 7034066732.

The previous prime is 21102200167. The next prime is 21102200267. The reversal of 21102200202 is 20200220112.

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

21102200202 is an admirable 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, 1758516678 + ... + 1758516689.

It is an arithmetic number, because the mean of its divisors is an integer number (5275550052).

Almost surely, 2^21102200202 is an apocalyptic number.

21102200202 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.

21102200202 is a wasteful number, since it uses less digits than its factorization.

21102200202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3517033372.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21102200202 its reverse (20200220112), we get a palindrome (41302420314).

The spelling of 21102200202 in words is "twenty-one billion, one hundred two million, two hundred thousand, two hundred two".