21243241414 has 8 divisors (see below), whose sum is σ = 32963650560. Its totient is φ = 10255357896.

The previous prime is 21243241391. The next prime is 21243241417. The reversal of 21243241414 is 41414234212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21243241417) 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, 183131334 + ... + 183131449.

It is an arithmetic number, because the mean of its divisors is an integer number (4120456320).

Almost surely, 2^21243241414 is an apocalyptic number.

21243241414 is a deficient number, since it is larger than the sum of its proper divisors (11720409146).

21243241414 is a wasteful number, since it uses less digits than its factorization.

21243241414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366262814.

The product of its digits is 6144, while the sum is 28.

Adding to 21243241414 its reverse (41414234212), we get a palindrome (62657475626).

The spelling of 21243241414 in words is "twenty-one billion, two hundred forty-three million, two hundred forty-one thousand, four hundred fourteen".