121122102222 has 128 divisors (see below), whose sum is σ = 295416460800. Its totient is φ = 36481017600.

The previous prime is 121122102203. The next prime is 121122102229. The reversal of 121122102222 is 222201221121.

It is a happy number.

121122102222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121122102195 and 121122102204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122102229) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 110411578 + ... + 110412674.

It is an arithmetic number, because the mean of its divisors is an integer number (2307941100).

Almost surely, 2^121122102222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121122102222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147708230400).

121122102222 is an abundant number, since it is smaller than the sum of its proper divisors (174294358578).

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

121122102222 is a wasteful number, since it uses less digits than its factorization.

121122102222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2079 (or 2073 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121122102222 its reverse (222201221121), we get a palindrome (343323323343).

The spelling of 121122102222 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred two thousand, two hundred twenty-two".