12122021111222 has 64 divisors (see below), whose sum is σ = 21061709061120. Its totient is φ = 5171367052800.

The previous prime is 12122021111203. The next prime is 12122021111231. The reversal of 12122021111222 is 22211112022121.

It is a junction number, because it is equal to n+sod(n) for n = 12122021111194 and 12122021111203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 961219697 + ... + 961232307.

It is an arithmetic number, because the mean of its divisors is an integer number (329089204080).

Almost surely, 2^{12122021111222} is an apocalyptic number.

12122021111222 is a deficient number, since it is larger than the sum of its proper divisors (8939687949898).

12122021111222 is a wasteful number, since it uses less digits than its factorization.

12122021111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19637.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12122021111222 its reverse (22211112022121), we get a palindrome (34333133133343).

The spelling of 12122021111222 in words is "twelve trillion, one hundred twenty-two billion, twenty-one million, one hundred eleven thousand, two hundred twenty-two".