12221020111222 has 16 divisors (see below), whose sum is σ = 19805125852512. Its totient is φ = 5622334254720.

The previous prime is 12221020111177. The next prime is 12221020111277. The reversal of 12221020111222 is 22211102012221.

It is a self number, because there is not a number n which added to its sum of digits gives 12221020111222.

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, 755682003 + ... + 755698174.

It is an arithmetic number, because the mean of its divisors is an integer number (1237820365782).

Almost surely, 2^{12221020111222} is an apocalyptic number.

12221020111222 is a deficient number, since it is larger than the sum of its proper divisors (7584105741290).

12221020111222 is a wasteful number, since it uses less digits than its factorization.

12221020111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511380503.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12221020111222 its reverse (22211102012221), we get a palindrome (34432122123443).

The spelling of 12221020111222 in words is "twelve trillion, two hundred twenty-one billion, twenty million, one hundred eleven thousand, two hundred twenty-two".