121300005 has 16 divisors (see below), whose sum is σ = 194298624. Its totient is φ = 64620480.

The previous prime is 121299991. The next prime is 121300007. The reversal of 121300005 is 500003121.

It is not a de Polignac number, because 121300005 - 2¹⁰ = 121298981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121300007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10900 + ... + 19010.

It is an arithmetic number, because the mean of its divisors is an integer number (12143664).

Almost surely, 2^121300005 is an apocalyptic number.

121300005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121300005 is a deficient number, since it is larger than the sum of its proper divisors (72998619).

121300005 is an equidigital number, since it uses as much as digits as its factorization.

121300005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9116.

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 121300005 is about 11013.6281487982. The cubic root of 121300005 is about 495.0171813238.

Adding to 121300005 its reverse (500003121), we get a palindrome (621303126).

The spelling of 121300005 in words is "one hundred twenty-one million, three hundred thousand, five".