21254012013300 has 288 divisors, whose sum is σ = 68157760957440. Its totient is φ = 5070285158400.

The previous prime is 21254012013287. The next prime is 21254012013307. The reversal of 21254012013300 is 331021045212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21254012013307) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 213753996 + ... + 213853404.

Almost surely, 2^{21254012013300} is an apocalyptic number.

21254012013300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21254012013300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34078880478720).

21254012013300 is an abundant number, since it is smaller than the sum of its proper divisors (46903748944140).

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

21254012013300 is a wasteful number, since it uses less digits than its factorization.

21254012013300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100471 (or 100464 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21254012013300 its reverse (331021045212), we get a palindrome (21585033058512).

The spelling of 21254012013300 in words is "twenty-one trillion, two hundred fifty-four billion, twelve million, thirteen thousand, three hundred".