121500352013 has 2 divisors, whose sum is σ = 121500352014. Its totient is φ = 121500352012.

The previous prime is 121500352007. The next prime is 121500352081. The reversal of 121500352013 is 310253005121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60780985444 + 60719366569 = 246538^2 + 246413^2 .

It is a cyclic number.

It is not a de Polignac number, because 121500352013 - 2⁴ = 121500351997 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 121500352013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121500358013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60750176006 + 60750176007.

It is an arithmetic number, because the mean of its divisors is an integer number (60750176007).

Almost surely, 2^121500352013 is an apocalyptic number.

It is an amenable number.

121500352013 is a deficient number, since it is larger than the sum of its proper divisors (1).

121500352013 is an equidigital number, since it uses as much as digits as its factorization.

121500352013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 900, while the sum is 23.

Adding to 121500352013 its reverse (310253005121), we get a palindrome (431753357134).

The spelling of 121500352013 in words is "one hundred twenty-one billion, five hundred million, three hundred fifty-two thousand, thirteen".