1228528534217 has 4 divisors (see below), whose sum is σ = 1228700918016. Its totient is φ = 1228356150420.

The previous prime is 1228528534199. The next prime is 1228528534229. The reversal of 1228528534217 is 7124358258221.

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.

It is a cyclic number.

It is not a de Polignac number, because 1228528534217 - 2⁸ = 1228528533961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1228528534517) 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, 86181209 + ... + 86195462.

It is an arithmetic number, because the mean of its divisors is an integer number (307175229504).

Almost surely, 2^{1228528534217} is an apocalyptic number.

It is an amenable number.

1228528534217 is a deficient number, since it is larger than the sum of its proper divisors (172383799).

1228528534217 is an equidigital number, since it uses as much as digits as its factorization.

1228528534217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172383798.

The product of its digits is 2150400, while the sum is 50.

The spelling of 1228528534217 in words is "one trillion, two hundred twenty-eight billion, five hundred twenty-eight million, five hundred thirty-four thousand, two hundred seventeen".