21310201200 has 240 divisors, whose sum is σ = 69164323200. Its totient is φ = 5608320000.

The previous prime is 21310201183. The next prime is 21310201229. The reversal of 21310201200 is 210201312.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41866546 + ... + 41867054.

It is an arithmetic number, because the mean of its divisors is an integer number (288184680).

Almost surely, 2^21310201200 is an apocalyptic number.

21310201200 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 21310201200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34582161600).

21310201200 is an abundant number, since it is smaller than the sum of its proper divisors (47854122000).

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

21310201200 is a wasteful number, since it uses less digits than its factorization.

21310201200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920 (or 909 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 21310201200 its reverse (210201312), we get a palindrome (21520402512).

The spelling of 21310201200 in words is "twenty-one billion, three hundred ten million, two hundred one thousand, two hundred".