212571126 has 48 divisors (see below), whose sum is σ = 486149040. Its totient is φ = 66942720.

The previous prime is 212571119. The next prime is 212571157. The reversal of 212571126 is 621175212.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 212571126.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177586 + ... + 178778.

It is an arithmetic number, because the mean of its divisors is an integer number (10128105).

Almost surely, 2^212571126 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212571126, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243074520).

212571126 is an abundant number, since it is smaller than the sum of its proper divisors (273577914).

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

212571126 is a wasteful number, since it uses less digits than its factorization.

212571126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741 (or 1738 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 212571126 is about 14579.8191346806. The cubic root of 212571126 is about 596.8081671137.

The spelling of 212571126 in words is "two hundred twelve million, five hundred seventy-one thousand, one hundred twenty-six".