13121344406633 has 16 divisors (see below), whose sum is σ = 14062143182976. Its totient is φ = 12211416771840.

The previous prime is 13121344406561. The next prime is 13121344406669. The reversal of 13121344406633 is 33660444312131.

It is a cyclic number.

It is not a de Polignac number, because 13121344406633 - 2⁸ = 13121344406377 is a prime.

It is a super-2 number, since 2×13121344406633² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13121344406033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63731585 + ... + 63937137.

It is an arithmetic number, because the mean of its divisors is an integer number (878883948936).

Almost surely, 2^{13121344406633} is an apocalyptic number.

It is an amenable number.

13121344406633 is a deficient number, since it is larger than the sum of its proper divisors (940798776343).

13121344406633 is a wasteful number, since it uses less digits than its factorization.

13121344406633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280624.

The product of its (nonzero) digits is 373248, while the sum is 41.

Adding to 13121344406633 its reverse (33660444312131), we get a palindrome (46781788718764).

The spelling of 13121344406633 in words is "thirteen trillion, one hundred twenty-one billion, three hundred forty-four million, four hundred six thousand, six hundred thirty-three".