21203336414 has 16 divisors (see below), whose sum is σ = 35356433280. Its totient is φ = 9470472480.

The previous prime is 21203336389. The next prime is 21203336437. The reversal of 21203336414 is 41463330212.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13152629 + ... + 13154240.

It is an arithmetic number, because the mean of its divisors is an integer number (2209777080).

Almost surely, 2^21203336414 is an apocalyptic number.

21203336414 is a deficient number, since it is larger than the sum of its proper divisors (14153096866).

21203336414 is a wasteful number, since it uses less digits than its factorization.

21203336414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26306915.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 21203336414 its reverse (41463330212), we get a palindrome (62666666626).

The spelling of 21203336414 in words is "twenty-one billion, two hundred three million, three hundred thirty-six thousand, four hundred fourteen".