2012331121 has 2 divisors, whose sum is σ = 2012331122. Its totient is φ = 2012331120.

The previous prime is 2012331119. The next prime is 2012331143. The reversal of 2012331121 is 1211332102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1657385521 + 354945600 = 40711^2 + 18840^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012331121 - 2¹ = 2012331119 is a prime.

Together with 2012331119, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 2012331095 and 2012331104.

It is not a weakly prime, because it can be changed into another prime (2012331151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006165560 + 1006165561.

It is an arithmetic number, because the mean of its divisors is an integer number (1006165561).

Almost surely, 2^2012331121 is an apocalyptic number.

It is an amenable number.

2012331121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012331121 is an equidigital number, since it uses as much as digits as its factorization.

2012331121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2012331121 is about 44859.0138210817. The cubic root of 2012331121 is about 1262.5051195558.

Adding to 2012331121 its reverse (1211332102), we get a palindrome (3223663223).

The spelling of 2012331121 in words is "two billion, twelve million, three hundred thirty-one thousand, one hundred twenty-one".