21020103021300 has 36 divisors (see below), whose sum is σ = 60818164742496. Its totient is φ = 5605360805600.

The previous prime is 21020103021257. The next prime is 21020103021347. The reversal of 21020103021300 is 312030102012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 21020103021300.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35033504736 + ... + 35033505335.

Almost surely, 2^{21020103021300} is an apocalyptic number.

21020103021300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21020103021300 is an abundant number, since it is smaller than the sum of its proper divisors (39798061721196).

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

21020103021300 is a wasteful number, since it uses less digits than its factorization.

21020103021300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70067010088 (or 70067010081 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21020103021300 its reverse (312030102012), we get a palindrome (21332133123312).

The spelling of 21020103021300 in words is "twenty-one trillion, twenty billion, one hundred three million, twenty-one thousand, three hundred".