121102202112 has 72 divisors (see below), whose sum is σ = 322749676704. Its totient is φ = 40312141824.

The previous prime is 121102202063. The next prime is 121102202131. The reversal of 121102202112 is 211202201121.

It is a junction number, because it is equal to n+sod(n) for n = 121102202091 and 121102202100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455383 + ... + 670505.

Almost surely, 2^121102202112 is an apocalyptic number.

121102202112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121102202112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161374838352).

121102202112 is an abundant number, since it is smaller than the sum of its proper divisors (201647474592).

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

121102202112 is an equidigital number, since it uses as much as digits as its factorization.

121102202112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215875 (or 215861 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121102202112 its reverse (211202201121), we get a palindrome (332304403233).

Subtracting 121102202112 from its reverse (211202201121), we obtain a palindrome (90099999009).

The spelling of 121102202112 in words is "one hundred twenty-one billion, one hundred two million, two hundred two thousand, one hundred twelve".