13221563701 has 4 divisors (see below), whose sum is σ = 13228980832. Its totient is φ = 13214146572.

The previous prime is 13221563699. The next prime is 13221563711. The reversal of 13221563701 is 10736512231.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10736512231 = 17 ⋅631559543.

It is a cyclic number.

It is not a de Polignac number, because 13221563701 - 2¹ = 13221563699 is a prime.

It is a super-3 number, since 3×13221563701³ (a number of 31 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221563711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3705891 + ... + 3709456.

It is an arithmetic number, because the mean of its divisors is an integer number (3307245208).

Almost surely, 2^13221563701 is an apocalyptic number.

It is an amenable number.

13221563701 is a deficient number, since it is larger than the sum of its proper divisors (7417131).

13221563701 is an equidigital number, since it uses as much as digits as its factorization.

13221563701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7417130.

The product of its (nonzero) digits is 7560, while the sum is 31.

The spelling of 13221563701 in words is "thirteen billion, two hundred twenty-one million, five hundred sixty-three thousand, seven hundred one".