21513532201341 has 4 divisors (see below), whose sum is σ = 28684709601792. Its totient is φ = 14342354800892.

The previous prime is 21513532201309. The next prime is 21513532201363. The reversal of 21513532201341 is 14310223531512.

It is a happy number.

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 21513532201341 - 2⁵ = 21513532201309 is a prime.

It is a super-2 number, since 2×21513532201341² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21513532202341) 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, 3585588700221 + ... + 3585588700226.

It is an arithmetic number, because the mean of its divisors is an integer number (7171177400448).

Almost surely, 2^{21513532201341} is an apocalyptic number.

It is an amenable number.

21513532201341 is a deficient number, since it is larger than the sum of its proper divisors (7171177400451).

21513532201341 is an equidigital number, since it uses as much as digits as its factorization.

21513532201341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7171177400450.

The product of its (nonzero) digits is 21600, while the sum is 33.

Adding to 21513532201341 its reverse (14310223531512), we get a palindrome (35823755732853).

The spelling of 21513532201341 in words is "twenty-one trillion, five hundred thirteen billion, five hundred thirty-two million, two hundred one thousand, three hundred forty-one".