13221511611307 has 4 divisors (see below), whose sum is σ = 13222316198520. Its totient is φ = 13220707024096.

The previous prime is 13221511611277. The next prime is 13221511611313. The reversal of 13221511611307 is 70311611512231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13221511611307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13221511611317) 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, 402268957 + ... + 402301822.

It is an arithmetic number, because the mean of its divisors is an integer number (3305579049630).

Almost surely, 2^{13221511611307} is an apocalyptic number.

13221511611307 is a deficient number, since it is larger than the sum of its proper divisors (804587213).

13221511611307 is an equidigital number, since it uses as much as digits as its factorization.

13221511611307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804587212.

The product of its (nonzero) digits is 7560, while the sum is 34.

The spelling of 13221511611307 in words is "thirteen trillion, two hundred twenty-one billion, five hundred eleven million, six hundred eleven thousand, three hundred seven".