1212528257317 has 8 divisors (see below), whose sum is σ = 1305825365600. Its totient is φ = 1119234821040.

The previous prime is 1212528257233. The next prime is 1212528257323. The reversal of 1212528257317 is 7137528252121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212528257317 - 2³¹ = 1210380773669 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 (1216528257317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 212067 + ... + 1571632.

It is an arithmetic number, because the mean of its divisors is an integer number (163228170700).

Almost surely, 2^{1212528257317} is an apocalyptic number.

It is an amenable number.

1212528257317 is a deficient number, since it is larger than the sum of its proper divisors (93297108283).

1212528257317 is a wasteful number, since it uses less digits than its factorization.

1212528257317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1836003.

The product of its digits is 470400, while the sum is 46.

The spelling of 1212528257317 in words is "one trillion, two hundred twelve billion, five hundred twenty-eight million, two hundred fifty-seven thousand, three hundred seventeen".