112121201121220 has 24 divisors (see below), whose sum is σ = 235463210889984. Its totient is φ = 44846825489376.

The previous prime is 112121201121197. The next prime is 112121201121247. The reversal of 112121201121220 is 22121102121211.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 102879334 + ... + 103963453.

It is an arithmetic number, because the mean of its divisors is an integer number (9810967120416).

Almost surely, 2^{112121201121220} is an apocalyptic number.

112121201121220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

112121201121220 is an abundant number, since it is smaller than the sum of its proper divisors (123342009768764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

112121201121220 is a wasteful number, since it uses less digits than its factorization.

112121201121220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206869899 (or 206869897 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 112121201121220 its reverse (22121102121211), we get a palindrome (134242303242431).

Subtracting from 112121201121220 its reverse (22121102121211), we obtain a palindrome (90000099000009).

The spelling of 112121201121220 in words is "one hundred twelve trillion, one hundred twenty-one billion, two hundred one million, one hundred twenty-one thousand, two hundred twenty".