21110202202 has 8 divisors (see below), whose sum is σ = 31689834912. Its totient is φ = 10546923900.

The previous prime is 21110202199. The next prime is 21110202227. The reversal of 21110202202 is 20220201112.

It is a happy number.

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, 4085374 + ... + 4090537.

It is an arithmetic number, because the mean of its divisors is an integer number (3961229364).

Almost surely, 2^21110202202 is an apocalyptic number.

21110202202 is a deficient number, since it is larger than the sum of its proper divisors (10579632710).

21110202202 is a wasteful number, since it uses less digits than its factorization.

21110202202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8177204.

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

Adding to 21110202202 its reverse (20220201112), we get a palindrome (41330403314).

The spelling of 21110202202 in words is "twenty-one billion, one hundred ten million, two hundred two thousand, two hundred two".