120211331 has 4 divisors (see below), whose sum is σ = 120875664. Its totient is φ = 119547000.

The previous prime is 120211327. The next prime is 120211339. The reversal of 120211331 is 133112021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133112021 = 7 ⋅19016003.

It is a cyclic number.

It is not a de Polignac number, because 120211331 - 2² = 120211327 is a prime.

It is a super-2 number, since 2×120211331² = 28901528201583122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120211339) 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 in 3 ways as a sum of consecutive naturals, for example, 331895 + ... + 332256.

It is an arithmetic number, because the mean of its divisors is an integer number (30218916).

Almost surely, 2^120211331 is an apocalyptic number.

120211331 is a deficient number, since it is larger than the sum of its proper divisors (664333).

120211331 is an equidigital number, since it uses as much as digits as its factorization.

120211331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664332.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 120211331 is about 10964.0928033285. The cubic root of 120211331 is about 493.5317934273.

Adding to 120211331 its reverse (133112021), we get a palindrome (253323352).

It can be divided in two parts, 12021 and 1331, that multiplied together give a palindrome (15999951).

The spelling of 120211331 in words is "one hundred twenty million, two hundred eleven thousand, three hundred thirty-one".