22202302212121 has 2 divisors, whose sum is σ = 22202302212122. Its totient is φ = 22202302212120.

The previous prime is 22202302212061. The next prime is 22202302212137. The reversal of 22202302212121 is 12121220320222.

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., 11489354264025 + 10712947948096 = 3389595^2 + 3273064^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202302212121 - 2⁷ = 22202302211993 is a prime.

It is a super-3 number, since 3×22202302212121³ (a number of 41 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22202302212092 and 22202302212101.

It is not a weakly prime, because it can be changed into another prime (22202302212151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11101151106060 + 11101151106061.

It is an arithmetic number, because the mean of its divisors is an integer number (11101151106061).

Almost surely, 2^{22202302212121} is an apocalyptic number.

It is an amenable number.

22202302212121 is a deficient number, since it is larger than the sum of its proper divisors (1).

22202302212121 is an equidigital number, since it uses as much as digits as its factorization.

22202302212121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 22202302212121 its reverse (12121220320222), we get a palindrome (34323522532343).

The spelling of 22202302212121 in words is "twenty-two trillion, two hundred two billion, three hundred two million, two hundred twelve thousand, one hundred twenty-one".