13212303033505 has 4 divisors (see below), whose sum is σ = 15854763640212. Its totient is φ = 10569842426800.

The previous prime is 13212303033473. The next prime is 13212303033529. The reversal of 13212303033505 is 50533030321231.

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 10430425966689 + 2781877066816 = 3229617^2 + 1667896^2 .

It is not a de Polignac number, because 13212303033505 - 2⁵ = 13212303033473 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1321230303346 + ... + 1321230303355.

It is an arithmetic number, because the mean of its divisors is an integer number (3963690910053).

Almost surely, 2^{13212303033505} is an apocalyptic number.

It is an amenable number.

13212303033505 is a deficient number, since it is larger than the sum of its proper divisors (2642460606707).

13212303033505 is an equidigital number, since it uses as much as digits as its factorization.

13212303033505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2642460606706.

The product of its (nonzero) digits is 24300, while the sum is 31.

Adding to 13212303033505 its reverse (50533030321231), we get a palindrome (63745333354736).

The spelling of 13212303033505 in words is "thirteen trillion, two hundred twelve billion, three hundred three million, thirty-three thousand, five hundred five".