21100211200202 has 8 divisors (see below), whose sum is σ = 31650367882500. Its totient is φ = 10550088572704.

The previous prime is 21100211200183. The next prime is 21100211200213. The reversal of 21100211200202 is 20200211200112.

It can be written as a sum of positive squares in 2 ways, for example, as 18613348433761 + 2486862766441 = 4314319^2 + 1576979^2 .

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

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, 6903827 + ... + 9479622.

Almost surely, 2^{21100211200202} is an apocalyptic number.

21100211200202 is a deficient number, since it is larger than the sum of its proper divisors (10550156682298).

21100211200202 is a wasteful number, since it uses less digits than its factorization.

21100211200202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17027400.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21100211200202 its reverse (20200211200112), we get a palindrome (41300422400314).

The spelling of 21100211200202 in words is "twenty-one trillion, one hundred billion, two hundred eleven million, two hundred thousand, two hundred two".