12212122121222 has 16 divisors (see below), whose sum is σ = 19289555414640. Its totient is φ = 5782512227328.

The previous prime is 12212122121167. The next prime is 12212122121233. The reversal of 12212122121222 is 22212122121221.

12212122121222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

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, 60375443 + ... + 60577374.

It is an arithmetic number, because the mean of its divisors is an integer number (1205597213415).

Almost surely, 2^{12212122121222} is an apocalyptic number.

12212122121222 is a deficient number, since it is larger than the sum of its proper divisors (7077433293418).

12212122121222 is a wasteful number, since it uses less digits than its factorization.

12212122121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120955495.

The product of its digits is 512, while the sum is 23.

Adding to 12212122121222 its reverse (22212122121221), we get a palindrome (34424244242443).

Subtracting 12212122121222 from its reverse (22212122121221), we obtain a palindrome (9999999999999).

The spelling of 12212122121222 in words is "twelve trillion, two hundred twelve billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".