21433112231312 has 160 divisors (see below), whose sum is σ = 43232465802240. Its totient is φ = 10287642193920.

The previous prime is 21433112231299. The next prime is 21433112231339. The reversal of 21433112231312 is 21313221133412.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3616179293 + ... + 3616185219.

It is an arithmetic number, because the mean of its divisors is an integer number (270202911264).

Almost surely, 2^{21433112231312} is an apocalyptic number.

It is an amenable number.

21433112231312 is an abundant number, since it is smaller than the sum of its proper divisors (21799353570928).

21433112231312 is a wasteful number, since it uses less digits than its factorization.

21433112231312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6529 (or 6523 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

Adding to 21433112231312 its reverse (21313221133412), we get a palindrome (42746333364724).

The spelling of 21433112231312 in words is "twenty-one trillion, four hundred thirty-three billion, one hundred twelve million, two hundred thirty-one thousand, three hundred twelve".