21252134534300 has 18 divisors (see below), whose sum is σ = 46117131939648. Its totient is φ = 8500853813680.

The previous prime is 21252134534261. The next prime is 21252134534321. The reversal of 21252134534300 is 343543125212.

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, 106260672572 + ... + 106260672771.

It is an arithmetic number, because the mean of its divisors is an integer number (2562062885536).

Almost surely, 2^{21252134534300} is an apocalyptic number.

21252134534300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21252134534300 is an abundant number, since it is smaller than the sum of its proper divisors (24864997405348).

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

21252134534300 is a wasteful number, since it uses less digits than its factorization.

21252134534300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212521345357 (or 212521345350 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 21252134534300 its reverse (343543125212), we get a palindrome (21595677659512).

The spelling of 21252134534300 in words is "twenty-one trillion, two hundred fifty-two billion, one hundred thirty-four million, five hundred thirty-four thousand, three hundred".