212140444 has 6 divisors (see below), whose sum is σ = 371245784. Its totient is φ = 106070220.

The previous prime is 212140429. The next prime is 212140451. The reversal of 212140444 is 444041212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26517552 + ... + 26517559.

Almost surely, 2^212140444 is an apocalyptic number.

It is an amenable number.

212140444 is a deficient number, since it is larger than the sum of its proper divisors (159105340).

212140444 is a wasteful number, since it uses less digits than its factorization.

212140444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53035115 (or 53035113 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 212140444 is about 14565.0418468331. The cubic root of 212140444 is about 596.4048380811.

Adding to 212140444 its reverse (444041212), we get a palindrome (656181656).

The spelling of 212140444 in words is "two hundred twelve million, one hundred forty thousand, four hundred forty-four".