12510121301442 has 144 divisors (see below), whose sum is σ = 29914957668960. Its totient is φ = 3767569521408.

The previous prime is 12510121301441. The next prime is 12510121301449. The reversal of 12510121301442 is 24410312101521.

12510121301442 is a `hidden beast` number, since 1 + 2 + 5 + 1 + 0 + 1 + 213 + 0 + 1 + 442 = 666.

It is not an unprimeable number, because it can be changed into a prime (12510121301441) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 60866773 + ... + 61071959.

It is an arithmetic number, because the mean of its divisors is an integer number (207742761590).

Almost surely, 2^{12510121301442} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12510121301442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14957478834480).

12510121301442 is an abundant number, since it is smaller than the sum of its proper divisors (17404836367518).

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

12510121301442 is a wasteful number, since it uses less digits than its factorization.

12510121301442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205597 (or 205571 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

Adding to 12510121301442 its reverse (24410312101521), we get a palindrome (36920433402963).

The spelling of 12510121301442 in words is "twelve trillion, five hundred ten billion, one hundred twenty-one million, three hundred one thousand, four hundred forty-two".