It is a happy number.
It is a self number, because there is not a number n which added to its sum of digits gives 140121532252452.
Almost surely, 2140121532252452 is an apocalyptic number.
140121532252452 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 pseudoperfect number, because it is the sum of a subset of its proper divisors.
140121532252452 is a wasteful number, since it uses less digits than its factorization.
140121532252452 is an odious number, because the sum of its binary digits is odd.
Adding to 140121532252452 its reverse (254252235121041), we get a palindrome (394373767373493).
The spelling of 140121532252452 in words is "one hundred forty trillion, one hundred twenty-one billion, five hundred thirty-two million, two hundred fifty-two thousand, four hundred fifty-two".