121130243 has 6 divisors (see below), whose sum is σ = 131164884. Its totient is φ = 111812376.

The previous prime is 121130239. The next prime is 121130249. The reversal of 121130243 is 342031121.

It is not a de Polignac number, because 121130243 - 2² = 121130239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121130249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 358205 + ... + 358542.

It is an arithmetic number, because the mean of its divisors is an integer number (21860814).

Almost surely, 2^121130243 is an apocalyptic number.

121130243 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

121130243 is a deficient number, since it is larger than the sum of its proper divisors (10034641).

121130243 is an equidigital number, since it uses as much as digits as its factorization.

121130243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716773 (or 716760 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 121130243 is about 11005.9185441289. The cubic root of 121130243 is about 494.7861443995.

Adding to 121130243 its reverse (342031121), we get a palindrome (463161364).

The spelling of 121130243 in words is "one hundred twenty-one million, one hundred thirty thousand, two hundred forty-three".