121212010122 has 64 divisors (see below), whose sum is σ = 280267776000. Its totient is φ = 34230810240.

The previous prime is 121212010111. The next prime is 121212010141. The reversal of 121212010122 is 221010212121.

121212010122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19550379 + ... + 19556577.

It is an arithmetic number, because the mean of its divisors is an integer number (4379184000).

Almost surely, 2^121212010122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121212010122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140133888000).

121212010122 is an abundant number, since it is smaller than the sum of its proper divisors (159055765878).

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

121212010122 is a wasteful number, since it uses less digits than its factorization.

121212010122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11531.

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

Adding to 121212010122 its reverse (221010212121), we get a palindrome (342222222243).

The spelling of 121212010122 in words is "one hundred twenty-one billion, two hundred twelve million, ten thousand, one hundred twenty-two".