202222132121 has 2 divisors, whose sum is σ = 202222132122. Its totient is φ = 202222132120.

The previous prime is 202222132117. The next prime is 202222132139. The reversal of 202222132121 is 121231222202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201005168896 + 1216963225 = 448336^2 + 34885^2 .

It is a cyclic number.

It is not a de Polignac number, because 202222132121 - 2² = 202222132117 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 202222132093 and 202222132102.

It is not a weakly prime, because it can be changed into another prime (202222132111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101111066060 + 101111066061.

It is an arithmetic number, because the mean of its divisors is an integer number (101111066061).

Almost surely, 2^202222132121 is an apocalyptic number.

It is an amenable number.

202222132121 is a deficient number, since it is larger than the sum of its proper divisors (1).

202222132121 is an equidigital number, since it uses as much as digits as its factorization.

202222132121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 202222132121 its reverse (121231222202), we get a palindrome (323453354323).

The spelling of 202222132121 in words is "two hundred two billion, two hundred twenty-two million, one hundred thirty-two thousand, one hundred twenty-one".