10210101222121 has 2 divisors, whose sum is σ = 10210101222122. Its totient is φ = 10210101222120.

The previous prime is 10210101222091. The next prime is 10210101222137. The reversal of 10210101222121 is 12122210101201.

It is an a-pointer prime, because the next prime (10210101222137) can be obtained adding 10210101222121 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9782632398400 + 427468823721 = 3127720^2 + 653811^2 .

It is a cyclic number.

It is not a de Polignac number, because 10210101222121 - 2⁹ = 10210101221609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10210101222095 and 10210101222104.

It is not a weakly prime, because it can be changed into another prime (10210101222721) 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, 5105050611060 + 5105050611061.

It is an arithmetic number, because the mean of its divisors is an integer number (5105050611061).

Almost surely, 2^{10210101222121} is an apocalyptic number.

It is an amenable number.

10210101222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10210101222121 is an equidigital number, since it uses as much as digits as its factorization.

10210101222121 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 16.

Adding to 10210101222121 its reverse (12122210101201), we get a palindrome (22332311323322).

The spelling of 10210101222121 in words is "ten trillion, two hundred ten billion, one hundred one million, two hundred twenty-two thousand, one hundred twenty-one".