201812612 has 6 divisors (see below), whose sum is σ = 353172078. Its totient is φ = 100906304.

The previous prime is 201812581. The next prime is 201812617. The reversal of 201812612 is 216218102.

201812612 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 193321216 + 8491396 = 13904^2 + 2914^2 .

It is not an unprimeable number, because it can be changed into a prime (201812617) by changing a digit.

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, 25226573 + ... + 25226580.

It is an arithmetic number, because the mean of its divisors is an integer number (58862013).

Almost surely, 2^201812612 is an apocalyptic number.

It is an amenable number.

201812612 is a deficient number, since it is larger than the sum of its proper divisors (151359466).

201812612 is a wasteful number, since it uses less digits than its factorization.

201812612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50453157 (or 50453155 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 201812612 is about 14206.0765871510. The cubic root of 201812612 is about 586.5649403222.

The spelling of 201812612 in words is "two hundred one million, eight hundred twelve thousand, six hundred twelve".