121144113 has 8 divisors (see below), whose sum is σ = 179472800. Its totient is φ = 80762724.

The previous prime is 121144103. The next prime is 121144139. The reversal of 121144113 is 311441121.

121144113 is a `hidden beast` number, since 1 + 211 + 441 + 13 = 666.

It is not a de Polignac number, because 121144113 - 2⁴ = 121144097 is a prime.

It is a super-3 number, since 3×121144113³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (121144103) 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, 2243383 + ... + 2243436.

It is an arithmetic number, because the mean of its divisors is an integer number (22434100).

Almost surely, 2^121144113 is an apocalyptic number.

It is an amenable number.

121144113 is a deficient number, since it is larger than the sum of its proper divisors (58328687).

121144113 is an equidigital number, since it uses as much as digits as its factorization.

121144113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486828 (or 4486822 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 121144113 is about 11006.5486416042. The cubic root of 121144113 is about 494.8050288161.

Adding to 121144113 its reverse (311441121), we get a palindrome (432585234).

The spelling of 121144113 in words is "one hundred twenty-one million, one hundred forty-four thousand, one hundred thirteen".