201212315144 has 32 divisors (see below), whose sum is σ = 395365950720. Its totient is φ = 95818943616.

The previous prime is 201212315119. The next prime is 201212315153. The reversal of 201212315144 is 441513212102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2303792 + ... + 2389535.

It is an arithmetic number, because the mean of its divisors is an integer number (12355185960).

Almost surely, 2^201212315144 is an apocalyptic number.

It is an amenable number.

201212315144 is a deficient number, since it is larger than the sum of its proper divisors (194153635576).

201212315144 is a wasteful number, since it uses less digits than its factorization.

201212315144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693589 (or 4693585 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

Adding to 201212315144 its reverse (441513212102), we get a palindrome (642725527246).

The spelling of 201212315144 in words is "two hundred one billion, two hundred twelve million, three hundred fifteen thousand, one hundred forty-four".