21100011202 has 16 divisors (see below), whose sum is σ = 31990541112. Its totient is φ = 10436675200.

The previous prime is 21100011161. The next prime is 21100011209. The reversal of 21100011202 is 20211000112.

It can be written as a sum of positive squares in 4 ways, for example, as 17872748721 + 3227262481 = 133689^2 + 56809^2 .

It is not an unprimeable number, because it can be changed into a prime (21100011209) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 197208 + ... + 284764.

Almost surely, 2^21100011202 is an apocalyptic number.

21100011202 is a deficient number, since it is larger than the sum of its proper divisors (10890529910).

21100011202 is a wasteful number, since it uses less digits than its factorization.

21100011202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88853.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21100011202 its reverse (20211000112), we get a palindrome (41311011314).

The spelling of 21100011202 in words is "twenty-one billion, one hundred million, eleven thousand, two hundred two".