10220021022121 has 2 divisors, whose sum is σ = 10220021022122. Its totient is φ = 10220021022120.

The previous prime is 10220021022109. The next prime is 10220021022137. The reversal of 10220021022121 is 12122012002201.

It is a happy number.

It is an a-pointer prime, because the next prime (10220021022137) can be obtained adding 10220021022121 to its sum of digits (16).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6583658066496 + 3636362955625 = 2565864^2 + 1906925^2 .

It is a cyclic number.

It is not a de Polignac number, because 10220021022121 - 2²³ = 10220012633513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10220021022095 and 10220021022104.

It is not a weakly prime, because it can be changed into another prime (10220021022821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110010511060 + 5110010511061.

It is an arithmetic number, because the mean of its divisors is an integer number (5110010511061).

Almost surely, 2^{10220021022121} is an apocalyptic number.

It is an amenable number.

10220021022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10220021022121 is an equidigital number, since it uses as much as digits as its factorization.

10220021022121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10220021022121 its reverse (12122012002201), we get a palindrome (22342033024322).

The spelling of 10220021022121 in words is "ten trillion, two hundred twenty billion, twenty-one million, twenty-two thousand, one hundred twenty-one".