21202423341 has 16 divisors (see below), whose sum is σ = 32654000448. Its totient is φ = 12094073600.

The previous prime is 21202423337. The next prime is 21202423349. The reversal of 21202423341 is 14332420212.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21202423341 - 2² = 21202423337 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202423349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18896430 + ... + 18897551.

It is an arithmetic number, because the mean of its divisors is an integer number (2040875028).

Almost surely, 2^21202423341 is an apocalyptic number.

It is an amenable number.

21202423341 is a deficient number, since it is larger than the sum of its proper divisors (11451577107).

21202423341 is a wasteful number, since it uses less digits than its factorization.

21202423341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37794012.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21202423341 its reverse (14332420212), we get a palindrome (35534843553).

The spelling of 21202423341 in words is "twenty-one billion, two hundred two million, four hundred twenty-three thousand, three hundred forty-one".