13320121011121 has 4 divisors (see below), whose sum is σ = 13321983711744. Its totient is φ = 13318258310500.

The previous prime is 13320121011073. The next prime is 13320121011143. The reversal of 13320121011121 is 12111012102331.

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 not a de Polignac number, because 13320121011121 - 2¹⁷ = 13320120880049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13320121011181) 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, 931339585 + ... + 931353886.

It is an arithmetic number, because the mean of its divisors is an integer number (3330495927936).

Almost surely, 2^{13320121011121} is an apocalyptic number.

It is an amenable number.

13320121011121 is a deficient number, since it is larger than the sum of its proper divisors (1862700623).

13320121011121 is an equidigital number, since it uses as much as digits as its factorization.

13320121011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862700622.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 13320121011121 its reverse (12111012102331), we get a palindrome (25431133113452).

It can be divided in two parts, 133201210 and 11121, that added together give a palindrome (133212331).

The spelling of 13320121011121 in words is "thirteen trillion, three hundred twenty billion, one hundred twenty-one million, eleven thousand, one hundred twenty-one".