21152322021300 has 72 divisors (see below), whose sum is σ = 61215829456992. Its totient is φ = 5639226480000.

The previous prime is 21152322021133. The next prime is 21152322021307. The reversal of 21152322021300 is 312022325112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21152322021307) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7487211 + ... + 9917810.

Almost surely, 2^{21152322021300} is an apocalyptic number.

21152322021300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21152322021300 is an abundant number, since it is smaller than the sum of its proper divisors (40063507435692).

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

21152322021300 is a wasteful number, since it uses less digits than its factorization.

21152322021300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17409089 (or 17409082 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21152322021300 its reverse (312022325112), we get a palindrome (21464344346412).

The spelling of 21152322021300 in words is "twenty-one trillion, one hundred fifty-two billion, three hundred twenty-two million, twenty-one thousand, three hundred".