120211231121 has 4 divisors (see below), whose sum is σ = 120229091892. Its totient is φ = 120193370352.

The previous prime is 120211231111. The next prime is 120211231159. The reversal of 120211231121 is 121132112021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121132112021 = 118211 ⋅1024711.

It can be written as a sum of positive squares in 2 ways, for example, as 101785883521 + 18425347600 = 319039^2 + 135740^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120211231121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 120211231121.

It is not an unprimeable number, because it can be changed into a prime (120211231111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8920286 + ... + 8933751.

It is an arithmetic number, because the mean of its divisors is an integer number (30057272973).

Almost surely, 2^120211231121 is an apocalyptic number.

It is an amenable number.

120211231121 is a deficient number, since it is larger than the sum of its proper divisors (17860771).

120211231121 is an equidigital number, since it uses as much as digits as its factorization.

120211231121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17860770.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 120211231121 its reverse (121132112021), we get a palindrome (241343343142).

The spelling of 120211231121 in words is "one hundred twenty billion, two hundred eleven million, two hundred thirty-one thousand, one hundred twenty-one".