21321433414 has 8 divisors (see below), whose sum is σ = 33665421240. Its totient is φ = 10099626336.

The previous prime is 21321433411. The next prime is 21321433417. The reversal of 21321433414 is 41433412312.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21321433411) and next prime (21321433417).

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 (21321433411) 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, 280545139 + ... + 280545214.

It is an arithmetic number, because the mean of its divisors is an integer number (4208177655).

Almost surely, 2^21321433414 is an apocalyptic number.

21321433414 is a deficient number, since it is larger than the sum of its proper divisors (12343987826).

21321433414 is a wasteful number, since it uses less digits than its factorization.

21321433414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561090374.

The product of its digits is 6912, while the sum is 28.

Adding to 21321433414 its reverse (41433412312), we get a palindrome (62754845726).

The spelling of 21321433414 in words is "twenty-one billion, three hundred twenty-one million, four hundred thirty-three thousand, four hundred fourteen".