21332120000 has 70 divisors (see below), whose sum is σ = 52896823848. Its totient is φ = 8532832000.

The previous prime is 21332119961. The next prime is 21332120003. The reversal of 21332120000 is 2123312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21332120003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 226652 + ... + 306651.

Almost surely, 2^21332120000 is an apocalyptic number.

21332120000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21332120000 is an abundant number, since it is smaller than the sum of its proper divisors (31564703848).

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

21332120000 is an frugal number, since it uses more digits than its factorization.

21332120000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533335 (or 533310 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21332120000 its reverse (2123312), we get a palindrome (21334243312).

The spelling of 21332120000 in words is "twenty-one billion, three hundred thirty-two million, one hundred twenty thousand".