21032020300312 has 192 divisors, whose sum is σ = 48359235133440. Its totient is φ = 8538403910400.

The previous prime is 21032020300307. The next prime is 21032020300351. The reversal of 21032020300312 is 21300302023012.

It is a self number, because there is not a number n which added to its sum of digits gives 21032020300312.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 277550253 + ... + 277626019.

It is an arithmetic number, because the mean of its divisors is an integer number (251871016320).

Almost surely, 2^{21032020300312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21032020300312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24179617566720).

21032020300312 is an abundant number, since it is smaller than the sum of its proper divisors (27327214833128).

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

21032020300312 is a wasteful number, since it uses less digits than its factorization.

21032020300312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76302 (or 76291 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21032020300312 its reverse (21300302023012), we get a palindrome (42332322323324).

The spelling of 21032020300312 in words is "twenty-one trillion, thirty-two billion, twenty million, three hundred thousand, three hundred twelve".