121111211022 has 16 divisors (see below), whose sum is σ = 242225907840. Its totient is φ = 40369822712.

The previous prime is 121111211009. The next prime is 121111211047. The reversal of 121111211022 is 220112111121.

It is a happy number.

121111211022 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 121111210992 and 121111211010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 602773 + ... + 778175.

It is an arithmetic number, because the mean of its divisors is an integer number (15139119240).

Almost surely, 2^121111211022 is an apocalyptic number.

121111211022 is an abundant number, since it is smaller than the sum of its proper divisors (121114696818).

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

121111211022 is a wasteful number, since it uses less digits than its factorization.

121111211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290487.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121111211022 its reverse (220112111121), we get a palindrome (341223322143).

Subtracting 121111211022 from its reverse (220112111121), we obtain a palindrome (99000900099).

The spelling of 121111211022 in words is "one hundred twenty-one billion, one hundred eleven million, two hundred eleven thousand, twenty-two".