202111144 has 32 divisors (see below), whose sum is σ = 383281920. Its totient is φ = 99910656.

The previous prime is 202111141. The next prime is 202111157. The reversal of 202111144 is 441111202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (202111141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344019 + ... + 344605.

It is an arithmetic number, because the mean of its divisors is an integer number (11977560).

Almost surely, 2^202111144 is an apocalyptic number.

It is an amenable number.

202111144 is a deficient number, since it is larger than the sum of its proper divisors (181170776).

202111144 is a wasteful number, since it uses less digits than its factorization.

202111144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 202111144 is about 14216.5798981330. The cubic root of 202111144 is about 586.8540238945.

Adding to 202111144 its reverse (441111202), we get a palindrome (643222346).

The spelling of 202111144 in words is "two hundred two million, one hundred eleven thousand, one hundred forty-four".