21003705300 has 72 divisors (see below), whose sum is σ = 62866288800. Its totient is φ = 5407848320.

The previous prime is 21003705299. The next prime is 21003705301. The reversal of 21003705300 is 350730012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21003705299) and next prime (21003705301).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003705301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1198410 + ... + 1215809.

It is an arithmetic number, because the mean of its divisors is an integer number (873142900).

Almost surely, 2^21003705300 is an apocalyptic number.

21003705300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21003705300 is an abundant number, since it is smaller than the sum of its proper divisors (41862583500).

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

21003705300 is a wasteful number, since it uses less digits than its factorization.

21003705300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2414265 (or 2414258 counting only the distinct ones).

The product of its (nonzero) digits is 630, while the sum is 21.

The spelling of 21003705300 in words is "twenty-one billion, three million, seven hundred five thousand, three hundred".