21525224051350 has 24 divisors (see below), whose sum is σ = 40040932194000. Its totient is φ = 8609226081120.

The previous prime is 21525224051341. The next prime is 21525224051423. The reversal of 21525224051350 is 5315042252512.

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, 21084850 + ... + 22082149.

It is an arithmetic number, because the mean of its divisors is an integer number (1668372174750).

Almost surely, 2^{21525224051350} is an apocalyptic number.

21525224051350 is a deficient number, since it is larger than the sum of its proper divisors (18515708142650).

21525224051350 is a wasteful number, since it uses less digits than its factorization.

21525224051350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43176984 (or 43176979 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 21525224051350 in words is "twenty-one trillion, five hundred twenty-five billion, two hundred twenty-four million, fifty-one thousand, three hundred fifty".