121340344253 has 8 divisors (see below), whose sum is σ = 131465873088. Its totient is φ = 111546800064.

The previous prime is 121340344249. The next prime is 121340344261. The reversal of 121340344253 is 352443043121.

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

It is a cyclic number.

It is not a de Polignac number, because 121340344253 - 2² = 121340344249 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121340344273) 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, 82995401 + ... + 82996862.

It is an arithmetic number, because the mean of its divisors is an integer number (16433234136).

Almost surely, 2^121340344253 is an apocalyptic number.

It is an amenable number.

121340344253 is a deficient number, since it is larger than the sum of its proper divisors (10125528835).

121340344253 is a wasteful number, since it uses less digits than its factorization.

121340344253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165992323.

The product of its (nonzero) digits is 34560, while the sum is 32.

Adding to 121340344253 its reverse (352443043121), we get a palindrome (473783387374).

The spelling of 121340344253 in words is "one hundred twenty-one billion, three hundred forty million, three hundred forty-four thousand, two hundred fifty-three".