121243510113 has 8 divisors (see below), whose sum is σ = 176354196576. Its totient is φ = 73480915200.

The previous prime is 121243510079. The next prime is 121243510151. The reversal of 121243510113 is 311015342121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121243510113 - 2²⁹ = 120706639201 is a prime.

It is a super-2 number, since 2×121243510113² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121243510613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1837022848 + ... + 1837022913.

It is an arithmetic number, because the mean of its divisors is an integer number (22044274572).

Almost surely, 2^121243510113 is an apocalyptic number.

It is an amenable number.

121243510113 is a deficient number, since it is larger than the sum of its proper divisors (55110686463).

121243510113 is a wasteful number, since it uses less digits than its factorization.

121243510113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3674045775.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 121243510113 its reverse (311015342121), we get a palindrome (432258852234).

The spelling of 121243510113 in words is "one hundred twenty-one billion, two hundred forty-three million, five hundred ten thousand, one hundred thirteen".