10121110221121 has 2 divisors, whose sum is σ = 10121110221122. Its totient is φ = 10121110221120.

The previous prime is 10121110221113. The next prime is 10121110221181. The reversal of 10121110221121 is 12112201112101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9769775440896 + 351334780225 = 3125664^2 + 592735^2 .

It is a cyclic number.

It is not a de Polignac number, because 10121110221121 - 2³ = 10121110221113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10121110221095 and 10121110221104.

It is not a weakly prime, because it can be changed into another prime (10121110221181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5060555110560 + 5060555110561.

It is an arithmetic number, because the mean of its divisors is an integer number (5060555110561).

Almost surely, 2^{10121110221121} is an apocalyptic number.

It is an amenable number.

10121110221121 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121110221121 is an equidigital number, since it uses as much as digits as its factorization.

10121110221121 is an evil number, because the sum of its binary digits is even.

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

Adding to 10121110221121 its reverse (12112201112101), we get a palindrome (22233311333222).

The spelling of 10121110221121 in words is "ten trillion, one hundred twenty-one billion, one hundred ten million, two hundred twenty-one thousand, one hundred twenty-one".