12221002002222 has 32 divisors (see below), whose sum is σ = 29246842400160. Its totient is φ = 3760308308160.

The previous prime is 12221002002217. The next prime is 12221002002241. The reversal of 12221002002222 is 22220020012221.

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 = 12221002002195 and 12221002002204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8704416679 + ... + 8704418082.

It is an arithmetic number, because the mean of its divisors is an integer number (913963825005).

Almost surely, 2^{12221002002222} is an apocalyptic number.

12221002002222 is an abundant number, since it is smaller than the sum of its proper divisors (17025840397938).

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

12221002002222 is a wasteful number, since it uses less digits than its factorization.

12221002002222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17408834785 (or 17408834779 counting only the distinct ones).

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

Adding to 12221002002222 its reverse (22220020012221), we get a palindrome (34441022014443).

The spelling of 12221002002222 in words is "twelve trillion, two hundred twenty-one billion, two million, two thousand, two hundred twenty-two".