12550221222143 has 4 divisors (see below), whose sum is σ = 13691150424168. Its totient is φ = 11409292020120.

The previous prime is 12550221222137. The next prime is 12550221222167. The reversal of 12550221222143 is 34122212205521.

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 12550221222143 - 2⁸ = 12550221221887 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 (12550221222443) 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, 570464600996 + ... + 570464601017.

It is an arithmetic number, because the mean of its divisors is an integer number (3422787606042).

Almost surely, 2^{12550221222143} is an apocalyptic number.

12550221222143 is a deficient number, since it is larger than the sum of its proper divisors (1140929202025).

12550221222143 is a wasteful number, since it uses less digits than its factorization.

12550221222143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140929202024.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 12550221222143 its reverse (34122212205521), we get a palindrome (46672433427664).

The spelling of 12550221222143 in words is "twelve trillion, five hundred fifty billion, two hundred twenty-one million, two hundred twenty-two thousand, one hundred forty-three".