121424111209 has 8 divisors (see below), whose sum is σ = 134156563200. Its totient is φ = 109312754496.

The previous prime is 121424111201. The next prime is 121424111351. The reversal of 121424111209 is 902111424121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121424111209 - 2³ = 121424111201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121424111201) 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, 155273409 + ... + 155274190.

It is an arithmetic number, because the mean of its divisors is an integer number (16769570400).

Almost surely, 2^121424111209 is an apocalyptic number.

It is an amenable number.

121424111209 is a deficient number, since it is larger than the sum of its proper divisors (12732451991).

121424111209 is a wasteful number, since it uses less digits than its factorization.

121424111209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310547639.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 121424111209 in words is "one hundred twenty-one billion, four hundred twenty-four million, one hundred eleven thousand, two hundred nine".