21251063325000 has 384 divisors, whose sum is σ = 70904211840000. Its totient is φ = 5294483040000.

The previous prime is 21251063324989. The next prime is 21251063325091. The reversal of 21251063325000 is 52336015212.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 74031751 + ... + 74318249.

It is an arithmetic number, because the mean of its divisors is an integer number (184646385000).

Almost surely, 2^{21251063325000} is an apocalyptic number.

21251063325000 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 21251063325000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35452105920000).

21251063325000 is an abundant number, since it is smaller than the sum of its proper divisors (49653148515000).

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

21251063325000 is a wasteful number, since it uses less digits than its factorization.

21251063325000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286599 (or 286575 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 21251063325000 in words is "twenty-one trillion, two hundred fifty-one billion, sixty-three million, three hundred twenty-five thousand".