21010221010202 has 16 divisors (see below), whose sum is σ = 31898625498432. Its totient is φ = 10377374345760.

The previous prime is 21010221010201. The next prime is 21010221010267. The reversal of 21010221010202 is 20201012201012.

It is not an unprimeable number, because it can be changed into a prime (21010221010201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5645699 + ... + 8596182.

It is an arithmetic number, because the mean of its divisors is an integer number (1993664093652).

Almost surely, 2^{21010221010202} is an apocalyptic number.

21010221010202 is a deficient number, since it is larger than the sum of its proper divisors (10888404488230).

21010221010202 is a wasteful number, since it uses less digits than its factorization.

21010221010202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14250853.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21010221010202 its reverse (20201012201012), we get a palindrome (41211233211214).

The spelling of 21010221010202 in words is "twenty-one trillion, ten billion, two hundred twenty-one million, ten thousand, two hundred two".