30133121209 has 2 divisors, whose sum is σ = 30133121210. Its totient is φ = 30133121208.

The previous prime is 30133121191. The next prime is 30133121279. The reversal of 30133121209 is 90212133103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30023185984 + 109935225 = 173272^2 + 10485^2 .

It is a cyclic number.

It is not a de Polignac number, because 30133121209 - 2⁹ = 30133120697 is a prime.

It is not a weakly prime, because it can be changed into another prime (30133121279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15066560604 + 15066560605.

It is an arithmetic number, because the mean of its divisors is an integer number (15066560605).

Almost surely, 2^30133121209 is an apocalyptic number.

It is an amenable number.

30133121209 is a deficient number, since it is larger than the sum of its proper divisors (1).

30133121209 is an equidigital number, since it uses as much as digits as its factorization.

30133121209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 30133121209 in words is "thirty billion, one hundred thirty-three million, one hundred twenty-one thousand, two hundred nine".