2012011121 has 2 divisors, whose sum is σ = 2012011122. Its totient is φ = 2012011120.

The previous prime is 2012011093. The next prime is 2012011159. The reversal of 2012011121 is 1211102102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1985950096 + 26061025 = 44564^2 + 5105^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012011121 - 2¹⁴ = 2011994737 is a prime.

It is not a weakly prime, because it can be changed into another prime (2012011171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006005560 + 1006005561.

It is an arithmetic number, because the mean of its divisors is an integer number (1006005561).

Almost surely, 2^2012011121 is an apocalyptic number.

It is an amenable number.

2012011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012011121 is an equidigital number, since it uses as much as digits as its factorization.

2012011121 is an evil number, because the sum of its binary digits is even.

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

The square root of 2012011121 is about 44855.4469490607. The cubic root of 2012011121 is about 1262.4381950073.

Adding to 2012011121 its reverse (1211102102), we get a palindrome (3223113223).

The spelling of 2012011121 in words is "two billion, twelve million, eleven thousand, one hundred twenty-one".