121423622112 has 144 divisors (see below), whose sum is σ = 372929356800. Its totient is φ = 37253661696.

The previous prime is 121423622063. The next prime is 121423622113. The reversal of 121423622112 is 211226324121.

121423622112 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 23 + 622 + 1 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121423622113) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1260193 + ... + 1353119.

It is an arithmetic number, because the mean of its divisors is an integer number (2589787200).

Almost surely, 2^121423622112 is an apocalyptic number.

121423622112 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 121423622112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186464678400).

121423622112 is an abundant number, since it is smaller than the sum of its proper divisors (251505734688).

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

121423622112 is a wasteful number, since it uses less digits than its factorization.

121423622112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93305 (or 93294 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 121423622112 its reverse (211226324121), we get a palindrome (332649946233).

The spelling of 121423622112 in words is "one hundred twenty-one billion, four hundred twenty-three million, six hundred twenty-two thousand, one hundred twelve".