121122101121209 has 4 divisors (see below), whose sum is σ = 121154827982820. Its totient is φ = 121089374259600.

The previous prime is 121122101121181. The next prime is 121122101121221. The reversal of 121122101121209 is 902121101221121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73324969000000 + 47797132121209 = 8563000^2 + 6913547^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121122101121209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121122101121239) 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, 16363425254 + ... + 16363432655.

It is an arithmetic number, because the mean of its divisors is an integer number (30288706995705).

Almost surely, 2^{121122101121209} is an apocalyptic number.

It is an amenable number.

121122101121209 is a deficient number, since it is larger than the sum of its proper divisors (32726861611).

121122101121209 is an equidigital number, since it uses as much as digits as its factorization.

121122101121209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32726861610.

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

The spelling of 121122101121209 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one hundred one million, one hundred twenty-one thousand, two hundred nine".