121223165479 has 8 divisors (see below), whose sum is σ = 131224441712. Its totient is φ = 111318520320.

The previous prime is 121223165477. The next prime is 121223165491. The reversal of 121223165479 is 974561322121.

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 121223165479 - 2¹ = 121223165477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121223165473) 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, 24155157 + ... + 24160174.

It is an arithmetic number, because the mean of its divisors is an integer number (16403055214).

Almost surely, 2^121223165479 is an apocalyptic number.

121223165479 is a deficient number, since it is larger than the sum of its proper divisors (10001276233).

121223165479 is a wasteful number, since it uses less digits than its factorization.

121223165479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48315537.

The product of its digits is 181440, while the sum is 43.

The spelling of 121223165479 in words is "one hundred twenty-one billion, two hundred twenty-three million, one hundred sixty-five thousand, four hundred seventy-nine".