121103021321209 has 2 divisors, whose sum is σ = 121103021321210. Its totient is φ = 121103021321208.

The previous prime is 121103021321179. The next prime is 121103021321383. The reversal of 121103021321209 is 902123120301121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93396220445584 + 27706800875625 = 9664172^2 + 5263725^2 .

It is a cyclic number.

It is not a de Polignac number, because 121103021321209 - 2²⁷ = 121102887103481 is a prime.

It is not a weakly prime, because it can be changed into another prime (121103021021209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60551510660604 + 60551510660605.

It is an arithmetic number, because the mean of its divisors is an integer number (60551510660605).

Almost surely, 2^{121103021321209} is an apocalyptic number.

It is an amenable number.

121103021321209 is a deficient number, since it is larger than the sum of its proper divisors (1).

121103021321209 is an equidigital number, since it uses as much as digits as its factorization.

121103021321209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 28.

The spelling of 121103021321209 in words is "one hundred twenty-one trillion, one hundred three billion, twenty-one million, three hundred twenty-one thousand, two hundred nine".