21120202010210 has 64 divisors (see below), whose sum is σ = 40617166528512. Its totient is φ = 7879272662016.

The previous prime is 21120202010123. The next prime is 21120202010213. The reversal of 21120202010210 is 1201020202112.

It is not an unprimeable number, because it can be changed into a prime (21120202010213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17842859 + ... + 18989681.

It is an arithmetic number, because the mean of its divisors is an integer number (634643227008).

Almost surely, 2^{21120202010210} is an apocalyptic number.

21120202010210 is a deficient number, since it is larger than the sum of its proper divisors (19496964518302).

21120202010210 is a wasteful number, since it uses less digits than its factorization.

21120202010210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147827.

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

Adding to 21120202010210 its reverse (1201020202112), we get a palindrome (22321222212322).

The spelling of 21120202010210 in words is "twenty-one trillion, one hundred twenty billion, two hundred two million, ten thousand, two hundred ten".