21342101241 has 4 divisors (see below), whose sum is σ = 28456134992. Its totient is φ = 14228067492.

The previous prime is 21342101219. The next prime is 21342101243. The reversal of 21342101241 is 14210124312.

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 not a de Polignac number, because 21342101241 - 2⁷ = 21342101113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21342101243) 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, 3557016871 + ... + 3557016876.

It is an arithmetic number, because the mean of its divisors is an integer number (7114033748).

Almost surely, 2^21342101241 is an apocalyptic number.

It is an amenable number.

21342101241 is a deficient number, since it is larger than the sum of its proper divisors (7114033751).

21342101241 is an equidigital number, since it uses as much as digits as its factorization.

21342101241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7114033750.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21342101241 its reverse (14210124312), we get a palindrome (35552225553).

The spelling of 21342101241 in words is "twenty-one billion, three hundred forty-two million, one hundred one thousand, two hundred forty-one".