2012321011121 has 2 divisors, whose sum is σ = 2012321011122. Its totient is φ = 2012321011120.

The previous prime is 2012321011027. The next prime is 2012321011123. The reversal of 2012321011121 is 1211101232102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2010993429025 + 1327582096 = 1418095^2 + 36436^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012321011121 - 2²² = 2012316816817 is a prime.

Together with 2012321011123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2012321011121.

It is not a weakly prime, because it can be changed into another prime (2012321011123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006160505560 + 1006160505561.

It is an arithmetic number, because the mean of its divisors is an integer number (1006160505561).

Almost surely, 2^{2012321011121} is an apocalyptic number.

It is an amenable number.

2012321011121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012321011121 is an equidigital number, since it uses as much as digits as its factorization.

2012321011121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 2012321011121 its reverse (1211101232102), we get a palindrome (3223422243223).

The spelling of 2012321011121 in words is "two trillion, twelve billion, three hundred twenty-one million, eleven thousand, one hundred twenty-one".