12451401142220 has 48 divisors (see below), whose sum is σ = 26197880169888. Its totient is φ = 4971057116160.

The previous prime is 12451401142177. The next prime is 12451401142241. The reversal of 12451401142220 is 2224110415421.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22950527 + ... + 23486793.

It is an arithmetic number, because the mean of its divisors is an integer number (545789170206).

Almost surely, 2^{12451401142220} is an apocalyptic number.

12451401142220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12451401142220 is an abundant number, since it is smaller than the sum of its proper divisors (13746479027668).

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

12451401142220 is a wasteful number, since it uses less digits than its factorization.

12451401142220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538490 (or 538488 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

Adding to 12451401142220 its reverse (2224110415421), we get a palindrome (14675511557641).

The spelling of 12451401142220 in words is "twelve trillion, four hundred fifty-one billion, four hundred one million, one hundred forty-two thousand, two hundred twenty".