121218793 has 4 divisors (see below), whose sum is σ = 121484500. Its totient is φ = 120953088.

The previous prime is 121218767. The next prime is 121218871. The reversal of 121218793 is 397812121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 80425024 + 40793769 = 8968^2 + 6387^2 .

It is a cyclic number.

It is not a de Polignac number, because 121218793 - 2¹³ = 121210601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121218733) 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, 132168 + ... + 133081.

It is an arithmetic number, because the mean of its divisors is an integer number (30371125).

Almost surely, 2^121218793 is an apocalyptic number.

It is an amenable number.

121218793 is a deficient number, since it is larger than the sum of its proper divisors (265707).

121218793 is an equidigital number, since it uses as much as digits as its factorization.

121218793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265706.

The product of its digits is 6048, while the sum is 34.

The square root of 121218793 is about 11009.9406447083. The cubic root of 121218793 is about 494.9066830859.

The spelling of 121218793 in words is "one hundred twenty-one million, two hundred eighteen thousand, seven hundred ninety-three".