2012002221121 has 2 divisors, whose sum is σ = 2012002221122. Its totient is φ = 2012002221120.

The previous prime is 2012002221113. The next prime is 2012002221139. The reversal of 2012002221121 is 1211222002102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1935259370496 + 76742850625 = 1391136^2 + 277025^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012002221121 - 2³ = 2012002221113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012002221095 and 2012002221104.

It is not a weakly prime, because it can be changed into another prime (2012002221101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006001110560 + 1006001110561.

It is an arithmetic number, because the mean of its divisors is an integer number (1006001110561).

Almost surely, 2^{2012002221121} is an apocalyptic number.

It is an amenable number.

2012002221121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012002221121 is an equidigital number, since it uses as much as digits as its factorization.

2012002221121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2012002221121 its reverse (1211222002102), we get a palindrome (3223224223223).

The spelling of 2012002221121 in words is "two trillion, twelve billion, two million, two hundred twenty-one thousand, one hundred twenty-one".