12870528213 has 4 divisors (see below), whose sum is σ = 17160704288. Its totient is φ = 8580352140.

The previous prime is 12870528211. The next prime is 12870528221. The reversal of 12870528213 is 31282507821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31282507821 = 3 ⋅10427502607.

It is not a de Polignac number, because 12870528213 - 2¹ = 12870528211 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12870528211) 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, 2145088033 + ... + 2145088038.

It is an arithmetic number, because the mean of its divisors is an integer number (4290176072).

Almost surely, 2^12870528213 is an apocalyptic number.

It is an amenable number.

12870528213 is a deficient number, since it is larger than the sum of its proper divisors (4290176075).

12870528213 is an equidigital number, since it uses as much as digits as its factorization.

12870528213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4290176074.

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 12870528213 in words is "twelve billion, eight hundred seventy million, five hundred twenty-eight thousand, two hundred thirteen".