1201161 has 16 divisors (see below), whose sum is σ = 1816640. Its totient is φ = 699840.

The previous prime is 1201153. The next prime is 1201163. The reversal of 1201161 is 1611021.

It is a happy number.

It is not a de Polignac number, because 1201161 - 2³ = 1201153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70 + ... + 1551.

It is an arithmetic number, because the mean of its divisors is an integer number (113540).

2^1201161 is an apocalyptic number.

It is an amenable number.

1201161 is a deficient number, since it is larger than the sum of its proper divisors (615479).

1201161 is a wasteful number, since it uses less digits than its factorization.

1201161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656.

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

The square root of 1201161 is about 1095.9749084719. The cubic root of 1201161 is about 106.3001166107.

Adding to 1201161 its reverse (1611021), we get a palindrome (2812182).

The spelling of 1201161 in words is "one million, two hundred one thousand, one hundred sixty-one".