21423113300 has 18 divisors (see below), whose sum is σ = 46488156078. Its totient is φ = 8569245280.

The previous prime is 21423113281. The next prime is 21423113321. The reversal of 21423113300 is 331132412.

It can be written as a sum of positive squares in 3 ways, for example, as 3034564 + 21420078736 = 1742^2 + 146356^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 107115467 + ... + 107115666.

Almost surely, 2^21423113300 is an apocalyptic number.

21423113300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21423113300 is an abundant number, since it is smaller than the sum of its proper divisors (25065042778).

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

21423113300 is a wasteful number, since it uses less digits than its factorization.

21423113300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214231147 (or 214231140 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21423113300 its reverse (331132412), we get a palindrome (21754245712).

The spelling of 21423113300 in words is "twenty-one billion, four hundred twenty-three million, one hundred thirteen thousand, three hundred".