21203290589800 has 192 divisors, whose sum is σ = 56561514831360. Its totient is φ = 7320782976000.

The previous prime is 21203290589783. The next prime is 21203290589807. The reversal of 21203290589800 is 898509230212.

It is not an unprimeable number, because it can be changed into a prime (21203290589807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 681594 + ... + 6547606.

It is an arithmetic number, because the mean of its divisors is an integer number (294591223080).

Almost surely, 2^{21203290589800} is an apocalyptic number.

21203290589800 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 21203290589800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28280757415680).

21203290589800 is an abundant number, since it is smaller than the sum of its proper divisors (35358224241560).

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

21203290589800 is a wasteful number, since it uses less digits than its factorization.

21203290589800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866124 (or 5866115 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 21203290589800 in words is "twenty-one trillion, two hundred three billion, two hundred ninety million, five hundred eighty-nine thousand, eight hundred".