1202202222121 has 2 divisors, whose sum is σ = 1202202222122. Its totient is φ = 1202202222120.

The previous prime is 1202202222119. The next prime is 1202202222139. The reversal of 1202202222121 is 1212222022021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1044443120400 + 157759101721 = 1021980^2 + 397189^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202202222121 - 2¹ = 1202202222119 is a prime.

Together with 1202202222119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1202202222181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601101111060 + 601101111061.

It is an arithmetic number, because the mean of its divisors is an integer number (601101111061).

Almost surely, 2^{1202202222121} is an apocalyptic number.

It is an amenable number.

1202202222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202202222121 is an equidigital number, since it uses as much as digits as its factorization.

1202202222121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 1202202222121 its reverse (1212222022021), we get a palindrome (2414424244142).

The spelling of 1202202222121 in words is "one trillion, two hundred two billion, two hundred two million, two hundred twenty-two thousand, one hundred twenty-one".