1320928896217 has 8 divisors (see below), whose sum is σ = 1518894577856. Its totient is φ = 1125278602992.

The previous prime is 1320928896191. The next prime is 1320928896233. The reversal of 1320928896217 is 7126988290231.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320928896217 is a prime.

It is a super-2 number, since 2×1320928896217² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1320928896317) 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, 578845878 + ... + 578848159.

It is an arithmetic number, because the mean of its divisors is an integer number (189861822232).

Almost surely, 2^{1320928896217} is an apocalyptic number.

It is an amenable number.

1320928896217 is a deficient number, since it is larger than the sum of its proper divisors (197965681639).

1320928896217 is a wasteful number, since it uses less digits than its factorization.

1320928896217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1157694207.

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 1320928896217 in words is "one trillion, three hundred twenty billion, nine hundred twenty-eight million, eight hundred ninety-six thousand, two hundred seventeen".