22002312121 has 2 divisors, whose sum is σ = 22002312122. Its totient is φ = 22002312120.

The previous prime is 22002312097. The next prime is 22002312131. The reversal of 22002312121 is 12121320022.

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., 21007603600 + 994708521 = 144940^2 + 31539^2 .

It is a cyclic number.

It is not a de Polignac number, because 22002312121 - 2⁹ = 22002311609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22002312095 and 22002312104.

It is not a weakly prime, because it can be changed into another prime (22002312131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11001156060 + 11001156061.

It is an arithmetic number, because the mean of its divisors is an integer number (11001156061).

Almost surely, 2^22002312121 is an apocalyptic number.

It is an amenable number.

22002312121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22002312121 is an equidigital number, since it uses as much as digits as its factorization.

22002312121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22002312121 its reverse (12121320022), we get a palindrome (34123632143).

The spelling of 22002312121 in words is "twenty-two billion, two million, three hundred twelve thousand, one hundred twenty-one".