121234009 has 12 divisors (see below), whose sum is σ = 134078976. Its totient is φ = 109520112.

The previous prime is 121233923. The next prime is 121234013. The reversal of 121234009 is 900432121.

It is not a de Polignac number, because 121234009 - 2⁷ = 121233881 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121234409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 312 + ... + 15574.

It is an arithmetic number, because the mean of its divisors is an integer number (11173248).

Almost surely, 2^121234009 is an apocalyptic number.

It is an amenable number.

121234009 is a deficient number, since it is larger than the sum of its proper divisors (12844967).

121234009 is a wasteful number, since it uses less digits than its factorization.

121234009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15336 (or 15323 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 121234009 is about 11010.6316349245. The cubic root of 121234009 is about 494.9273899550.

The spelling of 121234009 in words is "one hundred twenty-one million, two hundred thirty-four thousand, nine".