20021100110210 has 16 divisors (see below), whose sum is σ = 36039019291776. Its totient is φ = 8008209134448.

The previous prime is 20021100110173. The next prime is 20021100110227. The reversal of 20021100110210 is 1201100112002.

It is a junction number, because it is equal to n+sod(n) for n = 20021100110191 and 20021100110200.

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 7 ways as a sum of consecutive naturals, for example, 28499324 + ... + 29193383.

It is an arithmetic number, because the mean of its divisors is an integer number (2252438705736).

Almost surely, 2^{20021100110210} is an apocalyptic number.

20021100110210 is a deficient number, since it is larger than the sum of its proper divisors (16017919181566).

20021100110210 is a wasteful number, since it uses less digits than its factorization.

20021100110210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57727417.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 20021100110210 its reverse (1201100112002), we get a palindrome (21222200222212).

The spelling of 20021100110210 in words is "twenty trillion, twenty-one billion, one hundred million, one hundred ten thousand, two hundred ten".