10212110221121 has 2 divisors, whose sum is σ = 10212110221122. Its totient is φ = 10212110221120.

The previous prime is 10212110221081. The next prime is 10212110221139. The reversal of 10212110221121 is 12112201121201.

10212110221121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8500490113600 + 1711620107521 = 2915560^2 + 1308289^2 .

It is an emirp because it is prime and its reverse (12112201121201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10212110221121 - 2³⁰ = 10211036479297 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10212110221121.

It is not a weakly prime, because it can be changed into another prime (10212110221171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106055110560 + 5106055110561.

It is an arithmetic number, because the mean of its divisors is an integer number (5106055110561).

Almost surely, 2^{10212110221121} is an apocalyptic number.

It is an amenable number.

10212110221121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212110221121 is an equidigital number, since it uses as much as digits as its factorization.

10212110221121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 10212110221121 its reverse (12112201121201), we get a palindrome (22324311342322).

The spelling of 10212110221121 in words is "ten trillion, two hundred twelve billion, one hundred ten million, two hundred twenty-one thousand, one hundred twenty-one".