12020212121112 has 48 divisors (see below), whose sum is σ = 35058952022640. Its totient is φ = 3698526806208.

The previous prime is 12020212121101. The next prime is 12020212121119. The reversal of 12020212121112 is 21112121202021.

12020212121112 is a `hidden beast` number, since 120 + 202 + 121 + 211 + 12 = 666.

It is a super-2 number, since 2×12020212121112² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020212121119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6421052548 + ... + 6421054419.

It is an arithmetic number, because the mean of its divisors is an integer number (730394833805).

Almost surely, 2^{12020212121112} is an apocalyptic number.

12020212121112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12020212121112 is an abundant number, since it is smaller than the sum of its proper divisors (23038739901528).

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

12020212121112 is a wasteful number, since it uses less digits than its factorization.

12020212121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12842106992 (or 12842106985 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12020212121112 its reverse (21112121202021), we get a palindrome (33132333323133).

The spelling of 12020212121112 in words is "twelve trillion, twenty billion, two hundred twelve million, one hundred twenty-one thousand, one hundred twelve".