21313426412 has 12 divisors (see below), whose sum is σ = 37299557736. Its totient is φ = 10656409920.

The previous prime is 21313426367. The next prime is 21313426423. The reversal of 21313426412 is 21462431312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173087 + ... + 269417.

It is an arithmetic number, because the mean of its divisors is an integer number (3108296478).

Almost surely, 2^21313426412 is an apocalyptic number.

It is an amenable number.

21313426412 is a deficient number, since it is larger than the sum of its proper divisors (15986131324).

21313426412 is a wasteful number, since it uses less digits than its factorization.

21313426412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151648 (or 151646 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

Adding to 21313426412 its reverse (21462431312), we get a palindrome (42775857724).

The spelling of 21313426412 in words is "twenty-one billion, three hundred thirteen million, four hundred twenty-six thousand, four hundred twelve".