20121112201120 has 288 divisors, whose sum is σ = 60438619100160. Its totient is φ = 6283414609920.

The previous prime is 20121112201109. The next prime is 20121112201153. The reversal of 20121112201120 is 2110221112102.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 20121112201094 and 20121112201103.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1696701 + ... + 6566659.

It is an arithmetic number, because the mean of its divisors is an integer number (209856316320).

Almost surely, 2^{20121112201120} is an apocalyptic number.

20121112201120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20121112201120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30219309550080).

20121112201120 is an abundant number, since it is smaller than the sum of its proper divisors (40317506899040).

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

20121112201120 is a wasteful number, since it uses less digits than its factorization.

20121112201120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4870036 (or 4870021 counting only the distinct ones).

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

Adding to 20121112201120 its reverse (2110221112102), we get a palindrome (22231333313222).

The spelling of 20121112201120 in words is "twenty trillion, one hundred twenty-one billion, one hundred twelve million, two hundred one thousand, one hundred twenty".