212133044 has 6 divisors (see below), whose sum is σ = 371232834. Its totient is φ = 106066520.

The previous prime is 212133037. The next prime is 212133049. The reversal of 212133044 is 440331212.

It can be written as a sum of positive squares in only one way, i.e., 199883044 + 12250000 = 14138^2 + 3500^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212133049) 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 as a sum of consecutive naturals, namely, 26516627 + ... + 26516634.

It is an arithmetic number, because the mean of its divisors is an integer number (61872139).

Almost surely, 2^212133044 is an apocalyptic number.

It is an amenable number.

212133044 is a deficient number, since it is larger than the sum of its proper divisors (159099790).

212133044 is a wasteful number, since it uses less digits than its factorization.

212133044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53033265 (or 53033263 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 212133044 is about 14564.7878117053. The cubic root of 212133044 is about 596.3979032929.

Adding to 212133044 its reverse (440331212), we get a palindrome (652464256).

The spelling of 212133044 in words is "two hundred twelve million, one hundred thirty-three thousand, forty-four".