120121211 has 16 divisors (see below), whose sum is σ = 146012160. Its totient is φ = 96526080.

The previous prime is 120121207. The next prime is 120121229. The reversal of 120121211 is 112121021.

It is not a de Polignac number, because 120121211 - 2² = 120121207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120121192 and 120121201.

It is not an unprimeable number, because it can be changed into a prime (120121241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8246 + ... + 17556.

It is an arithmetic number, because the mean of its divisors is an integer number (9125760).

Almost surely, 2^120121211 is an apocalyptic number.

120121211 is a deficient number, since it is larger than the sum of its proper divisors (25890949).

120121211 is an equidigital number, since it uses as much as digits as its factorization.

120121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9434.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 120121211 is about 10959.9822536353. The cubic root of 120121211 is about 493.4084323320.

Adding to 120121211 its reverse (112121021), we get a palindrome (232242232).

The spelling of 120121211 in words is "one hundred twenty million, one hundred twenty-one thousand, two hundred eleven".