12212002220022 has 144 divisors (see below), whose sum is σ = 30798602832816. Its totient is φ = 3482425267200.

The previous prime is 12212002219999. The next prime is 12212002220051. The reversal of 12212002220022 is 22002220021221.

12212002220022 is a `hidden beast` number, since 1 + 221 + 200 + 2 + 220 + 0 + 22 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 12212002219977 and 12212002220004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 315479193 + ... + 315517899.

It is an arithmetic number, because the mean of its divisors is an integer number (213879186339).

Almost surely, 2^{12212002220022} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12212002220022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15399301416408).

12212002220022 is an abundant number, since it is smaller than the sum of its proper divisors (18586600612794).

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

12212002220022 is a wasteful number, since it uses less digits than its factorization.

12212002220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47275 (or 47261 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 12212002220022 its reverse (22002220021221), we get a palindrome (34214222241243).

The spelling of 12212002220022 in words is "twelve trillion, two hundred twelve billion, two million, two hundred twenty thousand, twenty-two".