212812236 has 216 divisors, whose sum is σ = 703422720. Its totient is φ = 52970112.

The previous prime is 212812213. The next prime is 212812283. The reversal of 212812236 is 632218212.

212812236 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 809041 + ... + 809303.

Almost surely, 2^212812236 is an apocalyptic number.

212812236 is a gapful number since it is divisible by the number (26) 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 212812236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351711360).

212812236 is an abundant number, since it is smaller than the sum of its proper divisors (490610484).

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

212812236 is a wasteful number, since it uses less digits than its factorization.

212812236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325 (or 307 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 212812236 is about 14588.0854124179. The cubic root of 212812236 is about 597.0337261992.

The spelling of 212812236 in words is "two hundred twelve million, eight hundred twelve thousand, two hundred thirty-six".