20101111010210 has 96 divisors (see below), whose sum is σ = 38286533658240. Its totient is φ = 7596886457600.

The previous prime is 20101111010161. The next prime is 20101111010213. The reversal of 20101111010210 is 1201011110102.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20101111010191 and 20101111010200.

It is not an unprimeable number, because it can be changed into a prime (20101111010213) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 485384405 + ... + 485425815.

It is an arithmetic number, because the mean of its divisors is an integer number (398818058940).

Almost surely, 2^{20101111010210} is an apocalyptic number.

20101111010210 is a deficient number, since it is larger than the sum of its proper divisors (18185422648030).

20101111010210 is a wasteful number, since it uses less digits than its factorization.

20101111010210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42584 (or 42561 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 20101111010210 its reverse (1201011110102), we get a palindrome (21302122120312).

The spelling of 20101111010210 in words is "twenty trillion, one hundred one billion, one hundred eleven million, ten thousand, two hundred ten".