212237072 has 20 divisors (see below), whose sum is σ = 411921180. Its totient is φ = 105934848.

The previous prime is 212237071. The next prime is 212237107. The reversal of 212237072 is 270732212.

It can be written as a sum of positive squares in 2 ways, for example, as 114147856 + 98089216 = 10684^2 + 9904^2 .

It is a super-2 number, since 2×212237072² = 90089149462266368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212237071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1697 + ... + 20672.

It is an arithmetic number, because the mean of its divisors is an integer number (20596059).

Almost surely, 2^212237072 is an apocalyptic number.

It is an amenable number.

212237072 is a deficient number, since it is larger than the sum of its proper divisors (199684108).

212237072 is a wasteful number, since it uses less digits than its factorization.

212237072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22970 (or 22964 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 212237072 is about 14568.3585897657. The cubic root of 212237072 is about 596.4953766223.

Adding to 212237072 its reverse (270732212), we get a palindrome (482969284).

The spelling of 212237072 in words is "two hundred twelve million, two hundred thirty-seven thousand, seventy-two".