21303301121000 has 64 divisors (see below), whose sum is σ = 49894677378000. Its totient is φ = 8513636217600.

The previous prime is 21303301120979. The next prime is 21303301121021. The reversal of 21303301121000 is 12110330312.

It is an interprime number because it is at equal distance from previous prime (21303301120979) and next prime (21303301121021).

It can be written as a sum of positive squares in 8 ways, for example, as 5283663098884 + 16019638022116 = 2298622^2 + 4002454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 21303301121000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8495735 + ... + 10713734.

Almost surely, 2^{21303301121000} is an apocalyptic number.

21303301121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21303301121000 is an abundant number, since it is smaller than the sum of its proper divisors (28591376257000).

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

21303301121000 is a wasteful number, since it uses less digits than its factorization.

21303301121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19210599 (or 19210585 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21303301121000 its reverse (12110330312), we get a palindrome (21315411451312).

The spelling of 21303301121000 in words is "twenty-one trillion, three hundred three billion, three hundred one million, one hundred twenty-one thousand".