12122212000000 has 126 divisors (see below), whose sum is σ = 30245962338914. Its totient is φ = 4848883200000.

The previous prime is 12122211999979. The next prime is 12122212000007. The reversal of 12122212000000 is 21222121.

It is a happy number.

It can be written as a sum of positive squares in 7 ways, for example, as 12108618305536 + 13593694464 = 3479744^2 + 116592^2 .

It is not an unprimeable number, because it can be changed into a prime (12122212000007) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2484724 + ... + 5515276.

Almost surely, 2^{12122212000000} is an apocalyptic number.

12122212000000 is a gapful number since it is divisible by the number (10) 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 12122212000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15122981169457).

12122212000000 is an abundant number, since it is smaller than the sum of its proper divisors (18123750338914).

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

12122212000000 is an frugal number, since it uses more digits than its factorization.

12122212000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3030599 (or 3030560 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 12122212000000 its reverse (21222121), we get a palindrome (12122233222121).

The spelling of 12122212000000 in words is "twelve trillion, one hundred twenty-two billion, two hundred twelve million", and thus it is an aban number.