112011012121212 has 72 divisors (see below), whose sum is σ = 288023601181680. Its totient is φ = 36693250513920.

The previous prime is 112011012121207. The next prime is 112011012121249. The reversal of 112011012121212 is 212121210110211.

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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 706503 + ... + 14984030.

It is an arithmetic number, because the mean of its divisors is an integer number (4000327794190).

Almost surely, 2^{112011012121212} is an apocalyptic number.

112011012121212 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 112011012121212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (144011800590840).

112011012121212 is an abundant number, since it is smaller than the sum of its proper divisors (176012589060468).

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

112011012121212 is a wasteful number, since it uses less digits than its factorization.

112011012121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15693963 (or 15693958 counting only the distinct ones).

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

Adding to 112011012121212 its reverse (212121210110211), we get a palindrome (324132222231423).

The spelling of 112011012121212 in words is "one hundred twelve trillion, eleven billion, twelve million, one hundred twenty-one thousand, two hundred twelve".