121121221130113 has 2 divisors, whose sum is σ = 121121221130114. Its totient is φ = 121121221130112.

The previous prime is 121121221130069. The next prime is 121121221130137. The reversal of 121121221130113 is 311031122121121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104944801482049 + 16176419648064 = 10244257^2 + 4021992^2 .

It is a cyclic number.

It is not a de Polignac number, because 121121221130113 - 2¹⁷ = 121121220999041 is a prime.

It is not a weakly prime, because it can be changed into another prime (121121221134113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560610565056 + 60560610565057.

It is an arithmetic number, because the mean of its divisors is an integer number (60560610565057).

Almost surely, 2^{121121221130113} is an apocalyptic number.

It is an amenable number.

121121221130113 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121221130113 is an equidigital number, since it uses as much as digits as its factorization.

121121221130113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 121121221130113 its reverse (311031122121121), we get a palindrome (432152343251234).

The spelling of 121121221130113 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred twenty-one million, one hundred thirty thousand, one hundred thirteen".