21010200300 has 54 divisors (see below), whose sum is σ = 65855308428. Its totient is φ = 5602719840.

The previous prime is 21010200283. The next prime is 21010200317. The reversal of 21010200300 is 300201012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21010200283) and next prime (21010200317).

It is a super-2 number, since 2×21010200300² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11671434 + ... + 11673233.

Almost surely, 2^21010200300 is an apocalyptic number.

21010200300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21010200300 is an abundant number, since it is smaller than the sum of its proper divisors (44845108128).

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

21010200300 is a wasteful number, since it uses less digits than its factorization.

21010200300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23344687 (or 23344677 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 21010200300 its reverse (300201012), we get a palindrome (21310401312).

The spelling of 21010200300 in words is "twenty-one billion, ten million, two hundred thousand, three hundred".