21200021100202 has 16 divisors (see below), whose sum is σ = 36351777033792. Its totient is φ = 9083502398880.

The previous prime is 21200021100197. The next prime is 21200021100221. The reversal of 21200021100202 is 20200112000212.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185018163 + ... + 185132710.

It is an arithmetic number, because the mean of its divisors is an integer number (2271986064612).

Almost surely, 2^{21200021100202} is an apocalyptic number.

21200021100202 is a deficient number, since it is larger than the sum of its proper divisors (15151755933590).

21200021100202 is a wasteful number, since it uses less digits than its factorization.

21200021100202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370154973.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21200021100202 its reverse (20200112000212), we get a palindrome (41400133100414).

The spelling of 21200021100202 in words is "twenty-one trillion, two hundred billion, twenty-one million, one hundred thousand, two hundred two".