201213444 has 24 divisors (see below), whose sum is σ = 470538208. Its totient is φ = 66922560.

The previous prime is 201213443. The next prime is 201213449. The reversal of 201213444 is 444312102.

201213444 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×201213444² = 80973700092682272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201213444.

It is not an unprimeable number, because it can be changed into a prime (201213443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12862 + ... + 23829.

Almost surely, 2^201213444 is an apocalyptic number.

It is an amenable number.

201213444 is an abundant number, since it is smaller than the sum of its proper divisors (269324764).

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

201213444 is a wasteful number, since it uses less digits than its factorization.

201213444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37155 (or 37153 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 201213444 is about 14184.9724708933. The cubic root of 201213444 is about 585.9838743442.

Adding to 201213444 its reverse (444312102), we get a palindrome (645525546).

The spelling of 201213444 in words is "two hundred one million, two hundred thirteen thousand, four hundred forty-four".