13125411343221 has 16 divisors (see below), whose sum is σ = 17998815014208. Its totient is φ = 8502841520000.

The previous prime is 13125411343211. The next prime is 13125411343271. The reversal of 13125411343221 is 12234311452131.

It is a cyclic number.

It is not a de Polignac number, because 13125411343221 - 2³³ = 13116821408629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13125411343211) 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, 212540166 + ... + 212601911.

It is an arithmetic number, because the mean of its divisors is an integer number (1124925938388).

Almost surely, 2^{13125411343221} is an apocalyptic number.

It is an amenable number.

13125411343221 is a deficient number, since it is larger than the sum of its proper divisors (4873403670987).

13125411343221 is a wasteful number, since it uses less digits than its factorization.

13125411343221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425142372.

The product of its digits is 17280, while the sum is 33.

Adding to 13125411343221 its reverse (12234311452131), we get a palindrome (25359722795352).

The spelling of 13125411343221 in words is "thirteen trillion, one hundred twenty-five billion, four hundred eleven million, three hundred forty-three thousand, two hundred twenty-one".