120211121 has 2 divisors, whose sum is σ = 120211122. Its totient is φ = 120211120.

The previous prime is 120211111. The next prime is 120211129. The reversal of 120211121 is 121112021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120143521 + 67600 = 10961^2 + 260^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120211121 is a prime.

It is a super-2 number, since 2×120211121² = 28901427224153282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (120211129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60105560 + 60105561.

It is an arithmetic number, because the mean of its divisors is an integer number (60105561).

Almost surely, 2^120211121 is an apocalyptic number.

It is an amenable number.

120211121 is a deficient number, since it is larger than the sum of its proper divisors (1).

120211121 is an equidigital number, since it uses as much as digits as its factorization.

120211121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 120211121 is about 10964.0832266086. The cubic root of 120211121 is about 493.5315060397.

Adding to 120211121 its reverse (121112021), we get a palindrome (241323142).

The spelling of 120211121 in words is "one hundred twenty million, two hundred eleven thousand, one hundred twenty-one".