12221120122002 has 48 divisors (see below), whose sum is σ = 28894294009152. Its totient is φ = 3702342800160.

The previous prime is 12221120121949. The next prime is 12221120122007. The reversal of 12221120122002 is 20022102112221.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (12221120122007) 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, 7841793 + ... + 9270164.

It is an arithmetic number, because the mean of its divisors is an integer number (601964458524).

Almost surely, 2^{12221120122002} is an apocalyptic number.

12221120122002 is an abundant number, since it is smaller than the sum of its proper divisors (16673173887150).

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

12221120122002 is a wasteful number, since it uses less digits than its factorization.

12221120122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17115583 (or 17115580 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12221120122002 its reverse (20022102112221), we get a palindrome (32243222234223).

The spelling of 12221120122002 in words is "twelve trillion, two hundred twenty-one billion, one hundred twenty million, one hundred twenty-two thousand, two".