21124234300 has 36 divisors (see below), whose sum is σ = 49365713656. Its totient is φ = 7799716800.

The previous prime is 21124234297. The next prime is 21124234321. The reversal of 21124234300 is 343242112.

It is a super-2 number, since 2×21124234300² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8123406 + ... + 8126005.

Almost surely, 2^21124234300 is an apocalyptic number.

21124234300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21124234300 is an abundant number, since it is smaller than the sum of its proper divisors (28241479356).

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

21124234300 is a wasteful number, since it uses less digits than its factorization.

21124234300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16249438 (or 16249431 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21124234300 its reverse (343242112), we get a palindrome (21467476412).

It can be divided in two parts, 211242 and 34300, that added together give a palindrome (245542).

The spelling of 21124234300 in words is "twenty-one billion, one hundred twenty-four million, two hundred thirty-four thousand, three hundred".