212136216 has 32 divisors (see below), whose sum is σ = 558254400. Its totient is φ = 66990240.

The previous prime is 212136209. The next prime is 212136241. The reversal of 212136216 is 612631212.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 232150 + ... + 233061.

It is an arithmetic number, because the mean of its divisors is an integer number (17445450).

Almost surely, 2^212136216 is an apocalyptic number.

It is an amenable number.

212136216 is an abundant number, since it is smaller than the sum of its proper divisors (346118184).

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

212136216 is a wasteful number, since it uses less digits than its factorization.

212136216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465239 (or 465235 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 212136216 is about 14564.8967040621. The cubic root of 212136216 is about 596.4008759002.

Adding to 212136216 its reverse (612631212), we get a palindrome (824767428).

The spelling of 212136216 in words is "two hundred twelve million, one hundred thirty-six thousand, two hundred sixteen".