2012001120121 has 2 divisors, whose sum is σ = 2012001120122. Its totient is φ = 2012001120120.

The previous prime is 2012001120119. The next prime is 2012001120149. The reversal of 2012001120121 is 1210211002102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1240414560121 + 771586560000 = 1113739^2 + 878400^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012001120121 - 2¹ = 2012001120119 is a prime.

Together with 2012001120119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2012001120191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006000560060 + 1006000560061.

It is an arithmetic number, because the mean of its divisors is an integer number (1006000560061).

Almost surely, 2^{2012001120121} is an apocalyptic number.

It is an amenable number.

2012001120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012001120121 is an equidigital number, since it uses as much as digits as its factorization.

2012001120121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2012001120121 its reverse (1210211002102), we get a palindrome (3222212122223).

The spelling of 2012001120121 in words is "two trillion, twelve billion, one million, one hundred twenty thousand, one hundred twenty-one".