21200100001202 has 8 divisors (see below), whose sum is σ = 31932100832412. Its totient is φ = 10556066390400.

The previous prime is 21200100001193. The next prime is 21200100001211. The reversal of 21200100001202 is 20210000100212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21200100001193) and next prime (21200100001211).

It can be written as a sum of positive squares in 2 ways, for example, as 21192313527121 + 7786474081 = 4603511^2 + 88241^2 .

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, 21991804499 + ... + 21991805462.

Almost surely, 2^{21200100001202} is an apocalyptic number.

21200100001202 is a deficient number, since it is larger than the sum of its proper divisors (10732000831210).

21200100001202 is a wasteful number, since it uses less digits than its factorization.

21200100001202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43983610204.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21200100001202 its reverse (20210000100212), we get a palindrome (41410100101414).

The spelling of 21200100001202 in words is "twenty-one trillion, two hundred billion, one hundred million, one thousand, two hundred two".