21312413140241 has 4 divisors (see below), whose sum is σ = 21312437314800. Its totient is φ = 21312388965684.

The previous prime is 21312413140229. The next prime is 21312413140243. The reversal of 21312413140241 is 14204131421312.

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 21312413140241 - 2²² = 21312408945937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21312413140243) 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, 10712771 + ... + 12545448.

It is an arithmetic number, because the mean of its divisors is an integer number (5328109328700).

Almost surely, 2^{21312413140241} is an apocalyptic number.

It is an amenable number.

21312413140241 is a deficient number, since it is larger than the sum of its proper divisors (24174559).

21312413140241 is an equidigital number, since it uses as much as digits as its factorization.

21312413140241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24174558.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 21312413140241 its reverse (14204131421312), we get a palindrome (35516544561553).

The spelling of 21312413140241 in words is "twenty-one trillion, three hundred twelve billion, four hundred thirteen million, one hundred forty thousand, two hundred forty-one".