212857971929250 has 128 divisors (see below), whose sum is σ = 545957913346560. Its totient is φ = 55197130579200.

The previous prime is 212857971929243. The next prime is 212857971929311. The reversal of 212857971929250 is 52929179758212.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47500939 + ... + 51788561.

It is an arithmetic number, because the mean of its divisors is an integer number (4265296198020).

Almost surely, 2^{212857971929250} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212857971929250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272978956673280).

212857971929250 is an abundant number, since it is smaller than the sum of its proper divisors (333099941417310).

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

212857971929250 is a wasteful number, since it uses less digits than its factorization.

212857971929250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4289469 (or 4289459 counting only the distinct ones).

The product of its (nonzero) digits is 114307200, while the sum is 69.

The spelling of 212857971929250 in words is "two hundred twelve trillion, eight hundred fifty-seven billion, nine hundred seventy-one million, nine hundred twenty-nine thousand, two hundred fifty".