20121220112110 has 64 divisors (see below), whose sum is σ = 39555211127040. Its totient is φ = 7325036812800.

The previous prime is 20121220112087. The next prime is 20121220112137. The reversal of 20121220112110 is 1121102212102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 67917 + ... + 6344056.

It is an arithmetic number, because the mean of its divisors is an integer number (618050173860).

Almost surely, 2^{20121220112110} is an apocalyptic number.

20121220112110 is a deficient number, since it is larger than the sum of its proper divisors (19433991014930).

20121220112110 is a wasteful number, since it uses less digits than its factorization.

20121220112110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6412333.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20121220112110 its reverse (1121102212102), we get a palindrome (21242322324212).

The spelling of 20121220112110 in words is "twenty trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twelve thousand, one hundred ten".