2202112122121 has 2 divisors, whose sum is σ = 2202112122122. Its totient is φ = 2202112122120.

The previous prime is 2202112122097. The next prime is 2202112122151. The reversal of 2202112122121 is 1212212112022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2145390031225 + 56722090896 = 1464715^2 + 238164^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2202112122121 is a prime.

It is not a weakly prime, because it can be changed into another prime (2202112122151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1101056061060 + 1101056061061.

It is an arithmetic number, because the mean of its divisors is an integer number (1101056061061).

Almost surely, 2^{2202112122121} is an apocalyptic number.

It is an amenable number.

2202112122121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2202112122121 is an equidigital number, since it uses as much as digits as its factorization.

2202112122121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2202112122121 its reverse (1212212112022), we get a palindrome (3414324234143).

The spelling of 2202112122121 in words is "two trillion, two hundred two billion, one hundred twelve million, one hundred twenty-two thousand, one hundred twenty-one".