21310322000 has 160 divisors (see below), whose sum is σ = 56327716224. Its totient is φ = 7733376000.

The previous prime is 21310321999. The next prime is 21310322009. The reversal of 21310322000 is 22301312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21310322009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19425452 + ... + 19426548.

Almost surely, 2^21310322000 is an apocalyptic number.

21310322000 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 21310322000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28163858112).

21310322000 is an abundant number, since it is smaller than the sum of its proper divisors (35017394224).

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

21310322000 is a wasteful number, since it uses less digits than its factorization.

21310322000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2014 (or 1998 counting only the distinct ones).

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

Adding to 21310322000 its reverse (22301312), we get a palindrome (21332623312).

The spelling of 21310322000 in words is "twenty-one billion, three hundred ten million, three hundred twenty-two thousand".