21203002412300 has 576 divisors, whose sum is σ = 51176244510720. Its totient is φ = 7601755392000.

The previous prime is 21203002412237. The next prime is 21203002412311. The reversal of 21203002412300 is 321420030212.

It is a super-2 number, since 2×21203002412300² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 78239861165 + ... + 78239861435.

It is an arithmetic number, because the mean of its divisors is an integer number (88847646720).

Almost surely, 2^{21203002412300} is an apocalyptic number.

21203002412300 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 21203002412300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25588122255360).

21203002412300 is an abundant number, since it is smaller than the sum of its proper divisors (29973242098420).

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

21203002412300 is a wasteful number, since it uses less digits than its factorization.

21203002412300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21203002412300 its reverse (321420030212), we get a palindrome (21524422442512).

The spelling of 21203002412300 in words is "twenty-one trillion, two hundred three billion, two million, four hundred twelve thousand, three hundred".