201011161 has 8 divisors (see below), whose sum is σ = 223457024. Its totient is φ = 179562960.

The previous prime is 201011159. The next prime is 201011207. The reversal of 201011161 is 161110102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201011161 - 2¹ = 201011159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201014161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248991 + ... + 249796.

It is an arithmetic number, because the mean of its divisors is an integer number (27932128).

Almost surely, 2^201011161 is an apocalyptic number.

It is an amenable number.

201011161 is a deficient number, since it is larger than the sum of its proper divisors (22445863).

201011161 is a wasteful number, since it uses less digits than its factorization.

201011161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498831.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 201011161 is about 14177.8404914148. The cubic root of 201011161 is about 585.7874422744.

Adding to 201011161 its reverse (161110102), we get a palindrome (362121263).

The spelling of 201011161 in words is "two hundred one million, eleven thousand, one hundred sixty-one".