121118099 has 2 divisors, whose sum is σ = 121118100. Its totient is φ = 121118098.

The previous prime is 121118087. The next prime is 121118117. The reversal of 121118099 is 990811121.

It is a weak prime.

It is an emirp because it is prime and its reverse (990811121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121118099 - 2⁴ = 121118083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121118029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60559049 + 60559050.

It is an arithmetic number, because the mean of its divisors is an integer number (60559050).

Almost surely, 2^121118099 is an apocalyptic number.

121118099 is a deficient number, since it is larger than the sum of its proper divisors (1).

121118099 is an equidigital number, since it uses as much as digits as its factorization.

121118099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 32.

The square root of 121118099 is about 11005.3668271439. The cubic root of 121118099 is about 494.7696087995.

It can be divided in two parts, 12 and 1118099, that added together give a palindrome (1118111).

The spelling of 121118099 in words is "one hundred twenty-one million, one hundred eighteen thousand, ninety-nine".