220120112121112 has 32 divisors (see below), whose sum is σ = 471986200408320. Its totient is φ = 94277141736480.

The previous prime is 220120112121089. The next prime is 220120112121113. The reversal of 220120112121112 is 211121211021022.

It is a happy number.

It is a super-2 number, since 2×220120112121112² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 220120112121112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220120112121113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250935668 + ... + 1251111619.

It is an arithmetic number, because the mean of its divisors is an integer number (14749568762760).

Almost surely, 2^{220120112121112} is an apocalyptic number.

It is an amenable number.

220120112121112 is an abundant number, since it is smaller than the sum of its proper divisors (251866088287208).

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

220120112121112 is a wasteful number, since it uses less digits than its factorization.

220120112121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2502048871 (or 2502048867 counting only the distinct ones).

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

Adding to 220120112121112 its reverse (211121211021022), we get a palindrome (431241323142134).

The spelling of 220120112121112 in words is "two hundred twenty trillion, one hundred twenty billion, one hundred twelve million, one hundred twenty-one thousand, one hundred twelve".