20101211210210 has 32 divisors (see below), whose sum is σ = 38969343831600. Its totient is φ = 7421239196928.

The previous prime is 20101211210207. The next prime is 20101211210261. The reversal of 20101211210210 is 1201211210102.

It can be written as a sum of positive squares in 8 ways, for example, as 8167095142969 + 11934116067241 = 2857813^2 + 3454579^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6477497 + ... + 9064236.

Almost surely, 2^{20101211210210} is an apocalyptic number.

20101211210210 is a deficient number, since it is larger than the sum of its proper divisors (18868132621390).

20101211210210 is a wasteful number, since it uses less digits than its factorization.

20101211210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15551702.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20101211210210 its reverse (1201211210102), we get a palindrome (21302422420312).

The spelling of 20101211210210 in words is "twenty trillion, one hundred one billion, two hundred eleven million, two hundred ten thousand, two hundred ten".