121112102212212 has 192 divisors, whose sum is σ = 314550370068480. Its totient is φ = 36139677590016.

The previous prime is 121112102212207. The next prime is 121112102212229. The reversal of 121112102212212 is 212212201211121.

It is a super-2 number, since 2×121112102212212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 33489723 + ... + 36929469.

It is an arithmetic number, because the mean of its divisors is an integer number (1638283177440).

Almost surely, 2^{121112102212212} is an apocalyptic number.

121112102212212 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 121112102212212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157275185034240).

121112102212212 is an abundant number, since it is smaller than the sum of its proper divisors (193438267856268).

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

121112102212212 is a wasteful number, since it uses less digits than its factorization.

121112102212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3439942 (or 3439940 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 121112102212212 its reverse (212212201211121), we get a palindrome (333324303423333).

The spelling of 121112102212212 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred two million, two hundred twelve thousand, two hundred twelve".