121101222111102 has 24 divisors (see below), whose sum is σ = 270850045152960. Its totient is φ = 39064910358240.

The previous prime is 121101222111073. The next prime is 121101222111109. The reversal of 121101222111102 is 201111222101121.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101222111109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 108513639327 + ... + 108513640442.

It is an arithmetic number, because the mean of its divisors is an integer number (11285418548040).

Almost surely, 2^{121101222111102} is an apocalyptic number.

121101222111102 is an abundant number, since it is smaller than the sum of its proper divisors (149748823041858).

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

121101222111102 is a wasteful number, since it uses less digits than its factorization.

121101222111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217027279808 (or 217027279805 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121101222111102 its reverse (201111222101121), we get a palindrome (322212444212223).

The spelling of 121101222111102 in words is "one hundred twenty-one trillion, one hundred one billion, two hundred twenty-two million, one hundred eleven thousand, one hundred two".