121140105 has 32 divisors (see below), whose sum is σ = 211075200. Its totient is φ = 59092992.

The previous prime is 121140091. The next prime is 121140121. The reversal of 121140105 is 501041121.

It is a happy number.

It is not a de Polignac number, because 121140105 - 2⁸ = 121139849 is a prime.

It is a super-3 number, since 3×121140105³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 937 + ... + 15593.

It is an arithmetic number, because the mean of its divisors is an integer number (6596100).

Almost surely, 2^121140105 is an apocalyptic number.

121140105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121140105 is a deficient number, since it is larger than the sum of its proper divisors (89935095).

121140105 is a wasteful number, since it uses less digits than its factorization.

121140105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14713.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 121140105 is about 11006.3665666740. The cubic root of 121140105 is about 494.7995719532.

Adding to 121140105 its reverse (501041121), we get a palindrome (622181226).

The spelling of 121140105 in words is "one hundred twenty-one million, one hundred forty thousand, one hundred five".