12121022022222 has 16 divisors (see below), whose sum is σ = 24242085486720. Its totient is φ = 4040333767032.

The previous prime is 12121022022181. The next prime is 12121022022257. The reversal of 12121022022222 is 22222022012121.

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, 3123429 + ... + 5830767.

It is an arithmetic number, because the mean of its divisors is an integer number (1515130342920).

Almost surely, 2^{12121022022222} is an apocalyptic number.

12121022022222 is an abundant number, since it is smaller than the sum of its proper divisors (12121063464498).

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

12121022022222 is a wasteful number, since it uses less digits than its factorization.

12121022022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453527.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12121022022222 its reverse (22222022012121), we get a palindrome (34343044034343).

The spelling of 12121022022222 in words is "twelve trillion, one hundred twenty-one billion, twenty-two million, twenty-two thousand, two hundred twenty-two".