20021212110110 has 16 divisors (see below), whose sum is σ = 36038242424016. Its totient is φ = 8008471371648.

The previous prime is 20021212110101. The next prime is 20021212110131. The reversal of 20021212110110 is 1101121212002.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6410054 + ... + 9007286.

It is an arithmetic number, because the mean of its divisors is an integer number (2252390151501).

Almost surely, 2^{20021212110110} is an apocalyptic number.

20021212110110 is a deficient number, since it is larger than the sum of its proper divisors (16017030313906).

20021212110110 is a wasteful number, since it uses less digits than its factorization.

20021212110110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3368107.

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

Adding to 20021212110110 its reverse (1101121212002), we get a palindrome (21122333322112).

The spelling of 20021212110110 in words is "twenty trillion, twenty-one billion, two hundred twelve million, one hundred ten thousand, one hundred ten".