120211161 has 24 divisors (see below), whose sum is σ = 187153344. Its totient is φ = 68433120.

The previous prime is 120211159. The next prime is 120211163. The reversal of 120211161 is 161112021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (120211159) and next prime (120211163).

It is not a de Polignac number, because 120211161 - 2¹ = 120211159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 120211161.

It is not an unprimeable number, because it can be changed into a prime (120211163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41676 + ... + 44466.

It is an arithmetic number, because the mean of its divisors is an integer number (7798056).

Almost surely, 2^120211161 is an apocalyptic number.

It is an amenable number.

120211161 is a deficient number, since it is larger than the sum of its proper divisors (66942183).

120211161 is a wasteful number, since it uses less digits than its factorization.

120211161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3101 (or 3094 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 120211161 is about 10964.0850507464. The cubic root of 120211161 is about 493.5315607802.

Adding to 120211161 its reverse (161112021), we get a palindrome (281323182).

The spelling of 120211161 in words is "one hundred twenty million, two hundred eleven thousand, one hundred sixty-one".