120021221222 has 24 divisors (see below), whose sum is σ = 211073819904. Its totient is φ = 51032639952.

The previous prime is 120021221167. The next prime is 120021221227. The reversal of 120021221222 is 222122120021.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 120021221222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021221227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4809233 + ... + 4834124.

It is an arithmetic number, because the mean of its divisors is an integer number (8794742496).

Almost surely, 2^120021221222 is an apocalyptic number.

120021221222 is a deficient number, since it is larger than the sum of its proper divisors (91052598682).

120021221222 is a wasteful number, since it uses less digits than its factorization.

120021221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9643500 (or 9643493 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 120021221222 its reverse (222122120021), we get a palindrome (342143341243).

The spelling of 120021221222 in words is "one hundred twenty billion, twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".