21100211203202 has 16 divisors (see below), whose sum is σ = 33514196694912. Its totient is φ = 9928889954880.

The previous prime is 21100211203147. The next prime is 21100211203229. The reversal of 21100211203202 is 20230211200112.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18860798 + ... + 19948185.

It is an arithmetic number, because the mean of its divisors is an integer number (2094637293432).

Almost surely, 2^{21100211203202} is an apocalyptic number.

21100211203202 is a deficient number, since it is larger than the sum of its proper divisors (12413985491710).

21100211203202 is a wasteful number, since it uses less digits than its factorization.

21100211203202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38824993.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21100211203202 its reverse (20230211200112), we get a palindrome (41330422403314).

The spelling of 21100211203202 in words is "twenty-one trillion, one hundred billion, two hundred eleven million, two hundred three thousand, two hundred two".