11102121120121 has 2 divisors, whose sum is σ = 11102121120122. Its totient is φ = 11102121120120.

The previous prime is 11102121120113. The next prime is 11102121120151. The reversal of 11102121120121 is 12102112120111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8048228563600 + 3053892556521 = 2836940^2 + 1747539^2 .

It is a cyclic number.

It is not a de Polignac number, because 11102121120121 - 2³ = 11102121120113 is a prime.

It is a super-2 number, since 2×11102121120121² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11102121120095 and 11102121120104.

It is not a weakly prime, because it can be changed into another prime (11102121120151) 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, 5551060560060 + 5551060560061.

It is an arithmetic number, because the mean of its divisors is an integer number (5551060560061).

Almost surely, 2^{11102121120121} is an apocalyptic number.

It is an amenable number.

11102121120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

11102121120121 is an equidigital number, since it uses as much as digits as its factorization.

11102121120121 is an odious number, because the sum of its binary digits is odd.

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

Adding to 11102121120121 its reverse (12102112120111), we get a palindrome (23204233240232).

The spelling of 11102121120121 in words is "eleven trillion, one hundred two billion, one hundred twenty-one million, one hundred twenty thousand, one hundred twenty-one".