21232310000 has 200 divisors, whose sum is σ = 59036102400. Its totient is φ = 7313760000.

The previous prime is 21232309997. The next prime is 21232310039. The reversal of 21232310000 is 1323212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (200).

It is a super-2 number, since 2×21232310000² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2084921 + ... + 2095079.

It is an arithmetic number, because the mean of its divisors is an integer number (295180512).

Almost surely, 2^21232310000 is an apocalyptic number.

21232310000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21232310000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29518051200).

21232310000 is an abundant number, since it is smaller than the sum of its proper divisors (37803792400).

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

21232310000 is a wasteful number, since it uses less digits than its factorization.

21232310000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10217 (or 10196 counting only the distinct ones).

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

Adding to 21232310000 its reverse (1323212), we get a palindrome (21233633212).

The spelling of 21232310000 in words is "twenty-one billion, two hundred thirty-two million, three hundred ten thousand".