21238327333212 has 96 divisors (see below), whose sum is σ = 57122899384320. Its totient is φ = 6073944281280.

The previous prime is 21238327333207. The next prime is 21238327333213. The reversal of 21238327333212 is 21233372383212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21238327333213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15439698 + ... + 16758905.

It is an arithmetic number, because the mean of its divisors is an integer number (595030201920).

Almost surely, 2^{21238327333212} is an apocalyptic number.

21238327333212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21238327333212 is an abundant number, since it is smaller than the sum of its proper divisors (35884572051108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21238327333212 is a wasteful number, since it uses less digits than its factorization.

21238327333212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32198903 (or 32198901 counting only the distinct ones).

The product of its digits is 435456, while the sum is 42.

The spelling of 21238327333212 in words is "twenty-one trillion, two hundred thirty-eight billion, three hundred twenty-seven million, three hundred thirty-three thousand, two hundred twelve".