21342011241 has 4 divisors (see below), whose sum is σ = 28456014992. Its totient is φ = 14228007492.

The previous prime is 21342011237. The next prime is 21342011263. The reversal of 21342011241 is 14211024312.

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 21342011241 - 2² = 21342011237 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21342011641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3557001871 + ... + 3557001876.

It is an arithmetic number, because the mean of its divisors is an integer number (7114003748).

Almost surely, 2^21342011241 is an apocalyptic number.

It is an amenable number.

21342011241 is a deficient number, since it is larger than the sum of its proper divisors (7114003751).

21342011241 is an equidigital number, since it uses as much as digits as its factorization.

21342011241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7114003750.

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

Adding to 21342011241 its reverse (14211024312), we get a palindrome (35553035553).

The spelling of 21342011241 in words is "twenty-one billion, three hundred forty-two million, eleven thousand, two hundred forty-one".