21002211202 has 16 divisors (see below), whose sum is σ = 36011656512. Its totient is φ = 8998981200.

The previous prime is 21002211163. The next prime is 21002211221. The reversal of 21002211202 is 20211220012.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 96549 + ... + 226552.

It is an arithmetic number, because the mean of its divisors is an integer number (2250728532).

Almost surely, 2^21002211202 is an apocalyptic number.

21002211202 is a deficient number, since it is larger than the sum of its proper divisors (15009445310).

21002211202 is a wasteful number, since it uses less digits than its factorization.

21002211202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327753.

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

Adding to 21002211202 its reverse (20211220012), we get a palindrome (41213431214).

The spelling of 21002211202 in words is "twenty-one billion, two million, two hundred eleven thousand, two hundred two".