21332103212 has 12 divisors (see below), whose sum is σ = 42664206480. Its totient is φ = 9142329936.

The previous prime is 21332103193. The next prime is 21332103223. The reversal of 21332103212 is 21230123312.

21332103212 is an admirable number.

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, 380930387 + ... + 380930442.

It is an arithmetic number, because the mean of its divisors is an integer number (3555350540).

Almost surely, 2^21332103212 is an apocalyptic number.

It is an amenable number.

21332103212 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21332103212 is a wasteful number, since it uses less digits than its factorization.

21332103212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761860840 (or 761860838 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21332103212 its reverse (21230123312), we get a palindrome (42562226524).

The spelling of 21332103212 in words is "twenty-one billion, three hundred thirty-two million, one hundred three thousand, two hundred twelve".