12550222543213 has 4 divisors (see below), whose sum is σ = 12550278252028. Its totient is φ = 12550166834400.

The previous prime is 12550222543193. The next prime is 12550222543319. The reversal of 12550222543213 is 31234522205521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7963249417929 + 4586973125284 = 2821923^2 + 2141722^2 .

It is a cyclic number.

It is not a de Polignac number, because 12550222543213 - 2²⁵ = 12550188988781 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 (12550222543613) 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, 27515106 + ... + 27967507.

It is an arithmetic number, because the mean of its divisors is an integer number (3137569563007).

Almost surely, 2^{12550222543213} is an apocalyptic number.

It is an amenable number.

12550222543213 is a deficient number, since it is larger than the sum of its proper divisors (55708815).

12550222543213 is an equidigital number, since it uses as much as digits as its factorization.

12550222543213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55708814.

The product of its (nonzero) digits is 144000, while the sum is 37.

Adding to 12550222543213 its reverse (31234522205521), we get a palindrome (43784744748734).

The spelling of 12550222543213 in words is "twelve trillion, five hundred fifty billion, two hundred twenty-two million, five hundred forty-three thousand, two hundred thirteen".