13120421330421 has 12 divisors (see below), whose sum is σ = 18978078150720. Its totient is φ = 8734782114600.

The previous prime is 13120421330351. The next prime is 13120421330483. The reversal of 13120421330421 is 12403312402131.

13120421330421 is a `hidden beast` number, since 1 + 3 + 1 + 20 + 4 + 213 + 3 + 0 + 421 = 666.

It is not a de Polignac number, because 13120421330421 - 2³⁵ = 13086061592053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13120421330491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1013779755 + ... + 1013792696.

It is an arithmetic number, because the mean of its divisors is an integer number (1581506512560).

Almost surely, 2^{13120421330421} is an apocalyptic number.

It is an amenable number.

13120421330421 is a deficient number, since it is larger than the sum of its proper divisors (5857656820299).

13120421330421 is a wasteful number, since it uses less digits than its factorization.

13120421330421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027573176 (or 2027573173 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 13120421330421 its reverse (12403312402131), we get a palindrome (25523733732552).

The spelling of 13120421330421 in words is "thirteen trillion, one hundred twenty billion, four hundred twenty-one million, three hundred thirty thousand, four hundred twenty-one".