10220202121 has 2 divisors, whose sum is σ = 10220202122. Its totient is φ = 10220202120.

The previous prime is 10220202119. The next prime is 10220202131. The reversal of 10220202121 is 12120202201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10158422521 + 61779600 = 100789^2 + 7860^2 .

It is a cyclic number.

It is not a de Polignac number, because 10220202121 - 2¹ = 10220202119 is a prime.

Together with 10220202119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10220202131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110101060 + 5110101061.

It is an arithmetic number, because the mean of its divisors is an integer number (5110101061).

Almost surely, 2^10220202121 is an apocalyptic number.

It is an amenable number.

10220202121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10220202121 is an equidigital number, since it uses as much as digits as its factorization.

10220202121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10220202121 its reverse (12120202201), we get a palindrome (22340404322).

The spelling of 10220202121 in words is "ten billion, two hundred twenty million, two hundred two thousand, one hundred twenty-one".