201100072 has 24 divisors (see below), whose sum is σ = 400552110. Its totient is φ = 94634240.

The previous prime is 201100049. The next prime is 201100093. The reversal of 201100072 is 270001102.

It can be written as a sum of positive squares in 3 ways, for example, as 181333156 + 19766916 = 13466^2 + 4446^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 41179 + ... + 45802.

Almost surely, 2^201100072 is an apocalyptic number.

It is an amenable number.

201100072 is a deficient number, since it is larger than the sum of its proper divisors (199452038).

201100072 is a wasteful number, since it uses less digits than its factorization.

201100072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87021 (or 87000 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 201100072 is about 14180.9757069110. The cubic root of 201100072 is about 585.8737977945.

Adding to 201100072 its reverse (270001102), we get a palindrome (471101174).

The spelling of 201100072 in words is "two hundred one million, one hundred thousand, seventy-two".