21332212112 has 40 divisors (see below), whose sum is σ = 41898151680. Its totient is φ = 10520668800.

The previous prime is 21332212073. The next prime is 21332212117. The reversal of 21332212112 is 21121223312.

It is not an unprimeable number, because it can be changed into a prime (21332212117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361487 + ... + 416337.

It is an arithmetic number, because the mean of its divisors is an integer number (1047453792).

Almost surely, 2^21332212112 is an apocalyptic number.

It is an amenable number.

21332212112 is a deficient number, since it is larger than the sum of its proper divisors (20565939568).

21332212112 is a wasteful number, since it uses less digits than its factorization.

21332212112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55191 (or 55185 counting only the distinct ones).

The product of its digits is 288, while the sum is 20.

Adding to 21332212112 its reverse (21121223312), we get a palindrome (42453435424).

The spelling of 21332212112 in words is "twenty-one billion, three hundred thirty-two million, two hundred twelve thousand, one hundred twelve".