121111222211022 has 16 divisors (see below), whose sum is σ = 242228928166992. Its totient is φ = 40369326779520.

The previous prime is 121111222210999. The next prime is 121111222211039. The reversal of 121111222211022 is 220112222111121.

It is a self number, because there is not a number n which added to its sum of digits gives 121111222211022.

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, 269913193 + ... + 270361524.

It is an arithmetic number, because the mean of its divisors is an integer number (15139308010437).

Almost surely, 2^{121111222211022} is an apocalyptic number.

121111222211022 is an abundant number, since it is smaller than the sum of its proper divisors (121117705955970).

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

121111222211022 is a wasteful number, since it uses less digits than its factorization.

121111222211022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540312083.

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 121111222211022 its reverse (220112222111121), we get a palindrome (341223444322143).

Subtracting 121111222211022 from its reverse (220112222111121), we obtain a palindrome (99000999900099).

The spelling of 121111222211022 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred twenty-two million, two hundred eleven thousand, twenty-two".