21264214305250 has 192 divisors, whose sum is σ = 49442660796672. Its totient is φ = 6811424928000.

The previous prime is 21264214305223. The next prime is 21264214305281. The reversal of 21264214305250 is 5250341246212.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 11237670 + ... + 12992830.

It is an arithmetic number, because the mean of its divisors is an integer number (257513858316).

Almost surely, 2^{21264214305250} is an apocalyptic number.

21264214305250 is an abundant number, since it is smaller than the sum of its proper divisors (28178446491422).

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

21264214305250 is a wasteful number, since it uses less digits than its factorization.

21264214305250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755258 (or 1755241 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 21264214305250 in words is "twenty-one trillion, two hundred sixty-four billion, two hundred fourteen million, three hundred five thousand, two hundred fifty".