12020021222 has 16 divisors (see below), whose sum is σ = 19700319744. Its totient is φ = 5454981000.

The previous prime is 12020021203. The next prime is 12020021231. The reversal of 12020021222 is 22212002021.

It is a junction number, because it is equal to n+sod(n) for n = 12020021197 and 12020021206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419054 + ... + 446817.

It is an arithmetic number, because the mean of its divisors is an integer number (1231269984).

Almost surely, 2^12020021222 is an apocalyptic number.

12020021222 is a deficient number, since it is larger than the sum of its proper divisors (7680298522).

12020021222 is a wasteful number, since it uses less digits than its factorization.

12020021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866515.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12020021222 its reverse (22212002021), we get a palindrome (34232023243).

The spelling of 12020021222 in words is "twelve billion, twenty million, twenty-one thousand, two hundred twenty-two".