121030013 has 4 divisors (see below), whose sum is σ = 130340028. Its totient is φ = 111720000.

The previous prime is 121030001. The next prime is 121030031. The reversal of 121030013 is 310030121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13741849 + 107288164 = 3707^2 + 10358^2 .

It is a cyclic number.

It is not a de Polignac number, because 121030013 - 2⁸ = 121029757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121029976 and 121030003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121030043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4654988 + ... + 4655013.

It is an arithmetic number, because the mean of its divisors is an integer number (32585007).

Almost surely, 2^121030013 is an apocalyptic number.

121030013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121030013 is a deficient number, since it is larger than the sum of its proper divisors (9310015).

121030013 is an equidigital number, since it uses as much as digits as its factorization.

121030013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9310014.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 121030013 is about 11001.3641426870. The cubic root of 121030013 is about 494.6496354132.

Adding to 121030013 its reverse (310030121), we get a palindrome (431060134).

The spelling of 121030013 in words is "one hundred twenty-one million, thirty thousand, thirteen".