12122222200000 has 168 divisors, whose sum is σ = 32800226619888. Its totient is φ = 4408080000000.

The previous prime is 12122222199991. The next prime is 12122222200009. The reversal of 12122222200000 is 222222121.

It is an interprime number because it is at equal distance from previous prime (12122222199991) and next prime (12122222200009).

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

It is not an unprimeable number, because it can be changed into a prime (12122222200009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 555051 + ... + 4955050.

It is an arithmetic number, because the mean of its divisors is an integer number (195239444166).

Almost surely, 2^{12122222200000} is an apocalyptic number.

12122222200000 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 12122222200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16400113309944).

12122222200000 is an abundant number, since it is smaller than the sum of its proper divisors (20678004419888).

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

12122222200000 is an frugal number, since it uses more digits than its factorization.

12122222200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5510149 (or 5510119 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12122222200000 its reverse (222222121), we get a palindrome (12122444422121).

The spelling of 12122222200000 in words is "twelve trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred thousand".