12420212433143 has 4 divisors (see below), whose sum is σ = 12559765381920. Its totient is φ = 12280659484368.

The previous prime is 12420212433131. The next prime is 12420212433173. The reversal of 12420212433143 is 34133421202421.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12420212433143 - 2²² = 12420208238839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12420212433173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69776474255 + ... + 69776474432.

It is an arithmetic number, because the mean of its divisors is an integer number (3139941345480).

Almost surely, 2^{12420212433143} is an apocalyptic number.

12420212433143 is a deficient number, since it is larger than the sum of its proper divisors (139552948777).

12420212433143 is an equidigital number, since it uses as much as digits as its factorization.

12420212433143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139552948776.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 12420212433143 its reverse (34133421202421), we get a palindrome (46553633635564).

The spelling of 12420212433143 in words is "twelve trillion, four hundred twenty billion, two hundred twelve million, four hundred thirty-three thousand, one hundred forty-three".