201122536 has 8 divisors (see below), whose sum is σ = 377104770. Its totient is φ = 100561264.

The previous prime is 201122531. The next prime is 201122539. The reversal of 201122536 is 635221102.

It can be written as a sum of positive squares in only one way, i.e., 101002500 + 100120036 = 10050^2 + 10006^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (201122531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12570151 + ... + 12570166.

Almost surely, 2^201122536 is an apocalyptic number.

It is an amenable number.

201122536 is a deficient number, since it is larger than the sum of its proper divisors (175982234).

201122536 is a wasteful number, since it uses less digits than its factorization.

201122536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25140323 (or 25140319 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 201122536 is about 14181.7677318450. The cubic root of 201122536 is about 585.8956121062.

Adding to 201122536 its reverse (635221102), we get a palindrome (836343638).

The spelling of 201122536 in words is "two hundred one million, one hundred twenty-two thousand, five hundred thirty-six".