121101010212209 has 4 divisors (see below), whose sum is σ = 121115093371200. Its totient is φ = 121086927053220.

The previous prime is 121101010212173. The next prime is 121101010212233. The reversal of 121101010212209 is 902212010101121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 121101010212209 - 2²⁰ = 121101009163633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121101010212109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7041566597 + ... + 7041583794.

It is an arithmetic number, because the mean of its divisors is an integer number (30278773342800).

Almost surely, 2^{121101010212209} is an apocalyptic number.

It is an amenable number.

121101010212209 is a deficient number, since it is larger than the sum of its proper divisors (14083158991).

121101010212209 is an equidigital number, since it uses as much as digits as its factorization.

121101010212209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14083158990.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 121101010212209 in words is "one hundred twenty-one trillion, one hundred one billion, ten million, two hundred twelve thousand, two hundred nine".