13221660035 has 8 divisors (see below), whose sum is σ = 15870862176. Its totient is φ = 10574081280.

The previous prime is 13221660013. The next prime is 13221660037. The reversal of 13221660035 is 53006612231.

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

It is not a de Polignac number, because 13221660035 - 2¹⁴ = 13221643651 is a prime.

It is a super-2 number, since 2×13221660035² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13221660037) 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, 387854 + ... + 420563.

It is an arithmetic number, because the mean of its divisors is an integer number (1983857772).

Almost surely, 2^13221660035 is an apocalyptic number.

13221660035 is a deficient number, since it is larger than the sum of its proper divisors (2649202141).

13221660035 is an equidigital number, since it uses as much as digits as its factorization.

13221660035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 811693.

The product of its (nonzero) digits is 6480, while the sum is 29.

The spelling of 13221660035 in words is "thirteen billion, two hundred twenty-one million, six hundred sixty thousand, thirty-five".