2412221221212 has 144 divisors (see below), whose sum is σ = 6386011011072. Its totient is φ = 707701280000.

The previous prime is 2412221221159. The next prime is 2412221221307. The reversal of 2412221221212 is 2121221222142.

It is a super-2 number, since 2×2412221221212² (a number of 26 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 7644037 + ... + 7953347.

It is an arithmetic number, because the mean of its divisors is an integer number (44347298688).

Almost surely, 2^{2412221221212} is an apocalyptic number.

2412221221212 is a gapful number since it is divisible by the number (22) 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 2412221221212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3193005505536).

2412221221212 is an abundant number, since it is smaller than the sum of its proper divisors (3973789789860).

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

2412221221212 is a wasteful number, since it uses less digits than its factorization.

2412221221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309512 (or 309499 counting only the distinct ones).

The product of its digits is 1024, while the sum is 24.

Adding to 2412221221212 its reverse (2121221222142), we get a palindrome (4533442443354).

The spelling of 2412221221212 in words is "two trillion, four hundred twelve billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twelve".