12220021222002 has 96 divisors (see below), whose sum is σ = 29892472234560. Its totient is φ = 3573814608000.

The previous prime is 12220021221893. The next prime is 12220021222067. The reversal of 12220021222002 is 20022212002221.

12220021222002 is a `hidden beast` number, since 12 + 220 + 0 + 212 + 220 + 0 + 2 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12987477 + ... + 13896567.

It is an arithmetic number, because the mean of its divisors is an integer number (311379919110).

Almost surely, 2^{12220021222002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12220021222002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14946236117280).

12220021222002 is an abundant number, since it is smaller than the sum of its proper divisors (17672451012558).

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

12220021222002 is a wasteful number, since it uses less digits than its factorization.

12220021222002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911480 (or 911477 counting only the distinct ones).

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

Adding to 12220021222002 its reverse (20022212002221), we get a palindrome (32242233224223).

The spelling of 12220021222002 in words is "twelve trillion, two hundred twenty billion, twenty-one million, two hundred twenty-two thousand, two".