10101211201121 has 2 divisors, whose sum is σ = 10101211201122. Its totient is φ = 10101211201120.

The previous prime is 10101211201097. The next prime is 10101211201139. The reversal of 10101211201121 is 12110211210101.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7530194574400 + 2571016626721 = 2744120^2 + 1603439^2 .

It is a cyclic number.

It is not a de Polignac number, because 10101211201121 - 2⁶ = 10101211201057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10101211201096 and 10101211201105.

It is not a weakly prime, because it can be changed into another prime (10101211204121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050605600560 + 5050605600561.

It is an arithmetic number, because the mean of its divisors is an integer number (5050605600561).

Almost surely, 2^{10101211201121} is an apocalyptic number.

It is an amenable number.

10101211201121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101211201121 is an equidigital number, since it uses as much as digits as its factorization.

10101211201121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 10101211201121 its reverse (12110211210101), we get a palindrome (22211422411222).

The spelling of 10101211201121 in words is "ten trillion, one hundred one billion, two hundred eleven million, two hundred one thousand, one hundred twenty-one".