2122000121 has 2 divisors, whose sum is σ = 2122000122. Its totient is φ = 2122000120.

The previous prime is 2122000117. The next prime is 2122000147. The reversal of 2122000121 is 1210002212.

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., 2121615721 + 384400 = 46061^2 + 620^2 .

It is a cyclic number.

It is not a de Polignac number, because 2122000121 - 2² = 2122000117 is a prime.

It is not a weakly prime, because it can be changed into another prime (2122000021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061000060 + 1061000061.

It is an arithmetic number, because the mean of its divisors is an integer number (1061000061).

Almost surely, 2^2122000121 is an apocalyptic number.

It is an amenable number.

2122000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2122000121 is an equidigital number, since it uses as much as digits as its factorization.

2122000121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2122000121 is about 46065.1725384807. The cubic root of 2122000121 is about 1285.0355273881.

Adding to 2122000121 its reverse (1210002212), we get a palindrome (3332002333).

The spelling of 2122000121 in words is "two billion, one hundred twenty-two million, one hundred twenty-one", and thus it is an aban number.