13143452121221 has 8 divisors (see below), whose sum is σ = 14281509945600. Its totient is φ = 12050024015520.

The previous prime is 13143452121211. The next prime is 13143452121257. The reversal of 13143452121221 is 12212125434131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13143452121221 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 (13143452121211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11157429056 + ... + 11157430233.

It is an arithmetic number, because the mean of its divisors is an integer number (1785188743200).

Almost surely, 2^{13143452121221} is an apocalyptic number.

It is an amenable number.

13143452121221 is a deficient number, since it is larger than the sum of its proper divisors (1138057824379).

13143452121221 is a wasteful number, since it uses less digits than its factorization.

13143452121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22314859339.

The product of its digits is 11520, while the sum is 32.

Adding to 13143452121221 its reverse (12212125434131), we get a palindrome (25355577555352).

The spelling of 13143452121221 in words is "thirteen trillion, one hundred forty-three billion, four hundred fifty-two million, one hundred twenty-one thousand, two hundred twenty-one".