121121114018 has 8 divisors (see below), whose sum is σ = 181685324700. Its totient is φ = 60559339120.

The previous prime is 121121114017. The next prime is 121121114047. The reversal of 121121114018 is 810411121121.

It can be written as a sum of positive squares in 2 ways, for example, as 72427189129 + 48693924889 = 269123^2 + 220667^2 .

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

It is a super-2 number, since 2×121121114018² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121121113984 and 121121114002.

It is not an unprimeable number, because it can be changed into a prime (121121114017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479093 + ... + 686856.

Almost surely, 2^121121114018 is an apocalyptic number.

121121114018 is a deficient number, since it is larger than the sum of its proper divisors (60564210682).

121121114018 is a wasteful number, since it uses less digits than its factorization.

121121114018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217892.

The product of its (nonzero) digits is 128, while the sum is 23.

Adding to 121121114018 its reverse (810411121121), we get a palindrome (931532235139).

The spelling of 121121114018 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred fourteen thousand, eighteen".