13214402120521 has 12 divisors (see below), whose sum is σ = 15396216666240. Its totient is φ = 11308680076680.

The previous prime is 13214402120501. The next prime is 13214402120567. The reversal of 13214402120521 is 12502120441231.

It is a happy number.

13214402120521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13214402120521 - 2¹⁹ = 13214401596233 is a prime.

It is a super-2 number, since 2×13214402120521² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13214402120521.

It is not an unprimeable number, because it can be changed into a prime (13214402120501) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 213662961 + ... + 213724798.

It is an arithmetic number, because the mean of its divisors is an integer number (1283018055520).

Almost surely, 2^{13214402120521} is an apocalyptic number.

It is an amenable number.

13214402120521 is a deficient number, since it is larger than the sum of its proper divisors (2181814545719).

13214402120521 is an equidigital number, since it uses as much as digits as its factorization.

13214402120521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427388404 (or 427388397 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

Adding to 13214402120521 its reverse (12502120441231), we get a palindrome (25716522561752).

The spelling of 13214402120521 in words is "thirteen trillion, two hundred fourteen billion, four hundred two million, one hundred twenty thousand, five hundred twenty-one".