212003444 has 48 divisors (see below), whose sum is σ = 400982400. Its totient is φ = 97776000.

The previous prime is 212003437. The next prime is 212003453. The reversal of 212003444 is 444300212.

212003444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×212003444² = 89890920535722272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544802 + ... + 545190.

It is an arithmetic number, because the mean of its divisors is an integer number (8353800).

Almost surely, 2^212003444 is an apocalyptic number.

It is an amenable number.

212003444 is a deficient number, since it is larger than the sum of its proper divisors (188978956).

212003444 is a wasteful number, since it uses less digits than its factorization.

212003444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 582 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 212003444 is about 14560.3380455263. The cubic root of 212003444 is about 596.2764246325.

Adding to 212003444 its reverse (444300212), we get a palindrome (656303656).

The spelling of 212003444 in words is "two hundred twelve million, three thousand, four hundred forty-four".