201331212 has 12 divisors (see below), whose sum is σ = 469772856. Its totient is φ = 67110400.

The previous prime is 201331199. The next prime is 201331217. The reversal of 201331212 is 212133102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 201331191 and 201331200.

It is not an unprimeable number, because it can be changed into a prime (201331217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8388789 + ... + 8388812.

It is an arithmetic number, because the mean of its divisors is an integer number (39147738).

Almost surely, 2^201331212 is an apocalyptic number.

It is an amenable number.

201331212 is an abundant number, since it is smaller than the sum of its proper divisors (268441644).

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

201331212 is a wasteful number, since it uses less digits than its factorization.

201331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16777608 (or 16777606 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 201331212 is about 14189.1230172974. The cubic root of 201331212 is about 586.0981753377.

Adding to 201331212 its reverse (212133102), we get a palindrome (413464314).

The spelling of 201331212 in words is "two hundred one million, three hundred thirty-one thousand, two hundred twelve".