13113333222221 has 4 divisors (see below), whose sum is σ = 13113365691072. Its totient is φ = 13113300753372.

The previous prime is 13113333222167. The next prime is 13113333222263. The reversal of 13113333222221 is 12222233331131.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13113333222221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13113333225221) 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, 15620885 + ... + 16438938.

It is an arithmetic number, because the mean of its divisors is an integer number (3278341422768).

Almost surely, 2^{13113333222221} is an apocalyptic number.

It is an amenable number.

13113333222221 is a deficient number, since it is larger than the sum of its proper divisors (32468851).

13113333222221 is an equidigital number, since it uses as much as digits as its factorization.

13113333222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32468850.

The product of its digits is 7776, while the sum is 29.

Adding to 13113333222221 its reverse (12222233331131), we get a palindrome (25335566553352).

The spelling of 13113333222221 in words is "thirteen trillion, one hundred thirteen billion, three hundred thirty-three million, two hundred twenty-two thousand, two hundred twenty-one".