121416009 has 32 divisors (see below), whose sum is σ = 192845184. Its totient is φ = 66977280.

The previous prime is 121416007. The next prime is 121416049. The reversal of 121416009 is 900614121.

It is not a de Polignac number, because 121416009 - 2¹ = 121416007 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121416009.

It is not an unprimeable number, because it can be changed into a prime (121416007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29379 + ... + 33255.

It is an arithmetic number, because the mean of its divisors is an integer number (6026412).

Almost surely, 2^121416009 is an apocalyptic number.

It is an amenable number.

121416009 is a deficient number, since it is larger than the sum of its proper divisors (71429175).

121416009 is a wasteful number, since it uses less digits than its factorization.

121416009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 121416009 is about 11018.8932747350. The cubic root of 121416009 is about 495.1749325600.

The spelling of 121416009 in words is "one hundred twenty-one million, four hundred sixteen thousand, nine".