120011155 has 8 divisors (see below), whose sum is σ = 157105584. Its totient is φ = 87280800.

The previous prime is 120011153. The next prime is 120011159. The reversal of 120011155 is 551110021.

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

It is not a de Polignac number, because 120011155 - 2¹ = 120011153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120011153) 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, 1090956 + ... + 1091065.

It is an arithmetic number, because the mean of its divisors is an integer number (19638198).

Almost surely, 2^120011155 is an apocalyptic number.

120011155 is a deficient number, since it is larger than the sum of its proper divisors (37094429).

120011155 is a wasteful number, since it uses less digits than its factorization.

120011155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2182037.

The product of its (nonzero) digits is 50, while the sum is 16.

The square root of 120011155 is about 10954.9602920321. The cubic root of 120011155 is about 493.2576980568.

Adding to 120011155 its reverse (551110021), we get a palindrome (671121176).

The spelling of 120011155 in words is "one hundred twenty million, eleven thousand, one hundred fifty-five".