121133013243 has 24 divisors (see below), whose sum is σ = 178310457024. Its totient is φ = 73090488240.

The previous prime is 121133013229. The next prime is 121133013257. The reversal of 121133013243 is 342310331121.

It is an interprime number because it is at equal distance from previous prime (121133013229) and next prime (121133013257).

It is not a de Polignac number, because 121133013243 - 2²⁴ = 121116236027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121133013223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 652621 + ... + 817422.

It is an arithmetic number, because the mean of its divisors is an integer number (7429602376).

Almost surely, 2^121133013243 is an apocalyptic number.

121133013243 is a deficient number, since it is larger than the sum of its proper divisors (57177443781).

121133013243 is a wasteful number, since it uses less digits than its factorization.

121133013243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470295 (or 1470284 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 121133013243 its reverse (342310331121), we get a palindrome (463443344364).

The spelling of 121133013243 in words is "one hundred twenty-one billion, one hundred thirty-three million, thirteen thousand, two hundred forty-three".