21321401014 has 16 divisors (see below), whose sum is σ = 32349282768. Its totient is φ = 10538996832.

The previous prime is 21321400993. The next prime is 21321401039. The reversal of 21321401014 is 41010412312.

It is a junction number, because it is equal to n+sod(n) for n = 21321400982 and 21321401000.

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, 110484 + ... + 234199.

It is an arithmetic number, because the mean of its divisors is an integer number (2021830173).

Almost surely, 2^21321401014 is an apocalyptic number.

21321401014 is a deficient number, since it is larger than the sum of its proper divisors (11027881754).

21321401014 is a wasteful number, since it uses less digits than its factorization.

21321401014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345039.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21321401014 its reverse (41010412312), we get a palindrome (62331813326).

The spelling of 21321401014 in words is "twenty-one billion, three hundred twenty-one million, four hundred one thousand, fourteen".