121121211012209 has 8 divisors (see below), whose sum is σ = 121416495039840. Its totient is φ = 120826217764800.

The previous prime is 121121211012181. The next prime is 121121211012251. The reversal of 121121211012209 is 902210112121121.

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 121121211012209 - 2⁸ = 121121211011953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121121211018209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71860952 + ... + 73527129.

It is an arithmetic number, because the mean of its divisors is an integer number (15177061879980).

Almost surely, 2^{121121211012209} is an apocalyptic number.

It is an amenable number.

121121211012209 is a deficient number, since it is larger than the sum of its proper divisors (295284027631).

121121211012209 is a wasteful number, since it uses less digits than its factorization.

121121211012209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145390111.

The product of its (nonzero) digits is 288, while the sum is 26.

The spelling of 121121211012209 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred eleven million, twelve thousand, two hundred nine".