21031033300 has 18 divisors (see below), whose sum is σ = 45637342478. Its totient is φ = 8412413280.

The previous prime is 21031033279. The next prime is 21031033321. The reversal of 21031033300 is 333013012.

It is an interprime number because it is at equal distance from previous prime (21031033279) and next prime (21031033321).

It can be written as a sum of positive squares in 3 ways, for example, as 5058623376 + 15972409924 = 71124^2 + 126382^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 105155067 + ... + 105155266.

Almost surely, 2^21031033300 is an apocalyptic number.

21031033300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21031033300 is an abundant number, since it is smaller than the sum of its proper divisors (24606309178).

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

21031033300 is a wasteful number, since it uses less digits than its factorization.

21031033300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210310347 (or 210310340 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 16.

Adding to 21031033300 its reverse (333013012), we get a palindrome (21364046312).

The spelling of 21031033300 in words is "twenty-one billion, thirty-one million, thirty-three thousand, three hundred".