201122144 has 24 divisors (see below), whose sum is σ = 416800440. Its totient is φ = 95268096.

The previous prime is 201122101. The next prime is 201122161. The reversal of 201122144 is 441221102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164789 + ... + 166004.

It is an arithmetic number, because the mean of its divisors is an integer number (17366685).

Almost surely, 2^201122144 is an apocalyptic number.

It is an amenable number.

201122144 is an abundant number, since it is smaller than the sum of its proper divisors (215678296).

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

201122144 is a wasteful number, since it uses less digits than its factorization.

201122144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330822 (or 330814 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 201122144 is about 14181.7539112763. The cubic root of 201122144 is about 585.8952314573.

Adding to 201122144 its reverse (441221102), we get a palindrome (642343246).

The spelling of 201122144 in words is "two hundred one million, one hundred twenty-two thousand, one hundred forty-four".