22000210121 has 2 divisors, whose sum is σ = 22000210122. Its totient is φ = 22000210120.

The previous prime is 22000210117. The next prime is 22000210151. The reversal of 22000210121 is 12101200022.

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., 15766318096 + 6233892025 = 125564^2 + 78955^2 .

It is a cyclic number.

It is not a de Polignac number, because 22000210121 - 2² = 22000210117 is a prime.

It is not a weakly prime, because it can be changed into another prime (22000210151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11000105060 + 11000105061.

It is an arithmetic number, because the mean of its divisors is an integer number (11000105061).

Almost surely, 2^22000210121 is an apocalyptic number.

It is an amenable number.

22000210121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22000210121 is an equidigital number, since it uses as much as digits as its factorization.

22000210121 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.

Adding to 22000210121 its reverse (12101200022), we get a palindrome (34101410143).

The spelling of 22000210121 in words is "twenty-two billion, two hundred ten thousand, one hundred twenty-one".