21125314300 has 18 divisors (see below), whose sum is σ = 45841932248. Its totient is φ = 8450125680.

The previous prime is 21125314289. The next prime is 21125314313. The reversal of 21125314300 is 341352112.

It is a happy number.

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, 105626472 + ... + 105626671.

Almost surely, 2^21125314300 is an apocalyptic number.

21125314300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21125314300 is an abundant number, since it is smaller than the sum of its proper divisors (24716617948).

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

21125314300 is a wasteful number, since it uses less digits than its factorization.

21125314300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211253157 (or 211253150 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 21125314300 its reverse (341352112), we get a palindrome (21466666412).

The spelling of 21125314300 in words is "twenty-one billion, one hundred twenty-five million, three hundred fourteen thousand, three hundred".