120011121 has 6 divisors (see below), whose sum is σ = 173349410. Its totient is φ = 80007408.

The previous prime is 120011119. The next prime is 120011131. The reversal of 120011121 is 121110021.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 114062400 + 5948721 = 10680^2 + 2439^2 .

It is not a de Polignac number, because 120011121 - 2¹ = 120011119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 13334569 = 120011121 / (1 + 2 + 0 + 0 + 1 + 1 + 1 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120011131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6667276 + ... + 6667293.

Almost surely, 2^120011121 is an apocalyptic number.

It is an amenable number.

120011121 is a deficient number, since it is larger than the sum of its proper divisors (53338289).

120011121 is a wasteful number, since it uses less digits than its factorization.

120011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13334575 (or 13334572 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 120011121 is about 10954.9587402235. The cubic root of 120011121 is about 493.2576514757.

Adding to 120011121 its reverse (121110021), we get a palindrome (241121142).

It can be divided in two parts, 1200 and 11121, that added together give a palindrome (12321).

The spelling of 120011121 in words is "one hundred twenty million, eleven thousand, one hundred twenty-one".