121122021202009 has 2 divisors, whose sum is σ = 121122021202010. Its totient is φ = 121122021202008.

The previous prime is 121122021201991. The next prime is 121122021202087. The reversal of 121122021202009 is 900202120221121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74378067529984 + 46743953672025 = 8624272^2 + 6836955^2 .

It is a cyclic number.

It is not a de Polignac number, because 121122021202009 - 2⁵ = 121122021201977 is a prime.

It is not a weakly prime, because it can be changed into another prime (121122021202099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60561010601004 + 60561010601005.

It is an arithmetic number, because the mean of its divisors is an integer number (60561010601005).

Almost surely, 2^{121122021202009} is an apocalyptic number.

It is an amenable number.

121122021202009 is a deficient number, since it is larger than the sum of its proper divisors (1).

121122021202009 is an equidigital number, since it uses as much as digits as its factorization.

121122021202009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 25.

The spelling of 121122021202009 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, twenty-one million, two hundred two thousand, nine".