21352262341 has 4 divisors (see below), whose sum is σ = 21352567392. Its totient is φ = 21351957292.

The previous prime is 21352262333. The next prime is 21352262357. The reversal of 21352262341 is 14326225312.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21352262341 - 2³ = 21352262333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21352262311) 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, 10680 + ... + 206926.

It is an arithmetic number, because the mean of its divisors is an integer number (5338141848).

Almost surely, 2^21352262341 is an apocalyptic number.

It is an amenable number.

21352262341 is a deficient number, since it is larger than the sum of its proper divisors (305051).

21352262341 is a wasteful number, since it uses less digits than its factorization.

21352262341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305050.

The product of its digits is 17280, while the sum is 31.

Adding to 21352262341 its reverse (14326225312), we get a palindrome (35678487653).

The spelling of 21352262341 in words is "twenty-one billion, three hundred fifty-two million, two hundred sixty-two thousand, three hundred forty-one".