13510540214221 has 4 divisors (see below), whose sum is σ = 13512533220000. Its totient is φ = 13508547208444.

The previous prime is 13510540214207. The next prime is 13510540214251. The reversal of 13510540214221 is 12241204501531.

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 13510540214221 - 2¹³ = 13510540206029 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 (13510540214251) 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, 996492721 + ... + 996506278.

It is an arithmetic number, because the mean of its divisors is an integer number (3378133305000).

Almost surely, 2^{13510540214221} is an apocalyptic number.

It is an amenable number.

13510540214221 is a deficient number, since it is larger than the sum of its proper divisors (1993005779).

13510540214221 is an equidigital number, since it uses as much as digits as its factorization.

13510540214221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1993005778.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 13510540214221 its reverse (12241204501531), we get a palindrome (25751744715752).

The spelling of 13510540214221 in words is "thirteen trillion, five hundred ten billion, five hundred forty million, two hundred fourteen thousand, two hundred twenty-one".