13312220012221 has 32 divisors (see below), whose sum is σ = 14756584284288. Its totient is φ = 11930833474560.

The previous prime is 13312220012209. The next prime is 13312220012227. The reversal of 13312220012221 is 12221002221331.

It is not a de Polignac number, because 13312220012221 - 2¹³ = 13312220004029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13312220012192 and 13312220012201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312220012227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 316612426 + ... + 316654468.

It is an arithmetic number, because the mean of its divisors is an integer number (461143258884).

Almost surely, 2^{13312220012221} is an apocalyptic number.

It is an amenable number.

13312220012221 is a deficient number, since it is larger than the sum of its proper divisors (1444364272067).

13312220012221 is a wasteful number, since it uses less digits than its factorization.

13312220012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44941.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 13312220012221 its reverse (12221002221331), we get a palindrome (25533222233552).

The spelling of 13312220012221 in words is "thirteen trillion, three hundred twelve billion, two hundred twenty million, twelve thousand, two hundred twenty-one".