1321130616697 has 4 divisors (see below), whose sum is σ = 1321161601396. Its totient is φ = 1321099632000.

The previous prime is 1321130616691. The next prime is 1321130616719. The reversal of 1321130616697 is 7966160311231.

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 471997854441 + 849132762256 = 687021^2 + 921484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321130616697 is a prime.

It is a super-2 number, since 2×1321130616697² (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 (1321130616691) 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, 15428304 + ... + 15513697.

It is an arithmetic number, because the mean of its divisors is an integer number (330290400349).

Almost surely, 2^{1321130616697} is an apocalyptic number.

It is an amenable number.

1321130616697 is a deficient number, since it is larger than the sum of its proper divisors (30984699).

1321130616697 is an equidigital number, since it uses as much as digits as its factorization.

1321130616697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30984698.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 1321130616697 in words is "one trillion, three hundred twenty-one billion, one hundred thirty million, six hundred sixteen thousand, six hundred ninety-seven".