121846412159 has 4 divisors (see below), whose sum is σ = 128259381240. Its totient is φ = 115433443080.

The previous prime is 121846412137. The next prime is 121846412173. The reversal of 121846412159 is 951214648121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 951214648121 = 26249 ⋅36238129.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121846412159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121846472159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3206484512 + ... + 3206484549.

It is an arithmetic number, because the mean of its divisors is an integer number (32064845310).

Almost surely, 2^121846412159 is an apocalyptic number.

121846412159 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

121846412159 is a deficient number, since it is larger than the sum of its proper divisors (6412969081).

121846412159 is an equidigital number, since it uses as much as digits as its factorization.

121846412159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6412969080.

The product of its digits is 138240, while the sum is 44.

The spelling of 121846412159 in words is "one hundred twenty-one billion, eight hundred forty-six million, four hundred twelve thousand, one hundred fifty-nine".