3120121232009 has 2 divisors, whose sum is σ = 3120121232010. Its totient is φ = 3120121232008.

The previous prime is 3120121231991. The next prime is 3120121232029. The reversal of 3120121232009 is 9002321210213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2699932063609 + 420189168400 = 1643147^2 + 648220^2 .

It is a cyclic number.

It is not a de Polignac number, because 3120121232009 - 2³⁶ = 3051401755273 is a prime.

It is not a weakly prime, because it can be changed into another prime (3120121232029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560060616004 + 1560060616005.

It is an arithmetic number, because the mean of its divisors is an integer number (1560060616005).

Almost surely, 2^{3120121232009} is an apocalyptic number.

It is an amenable number.

3120121232009 is a deficient number, since it is larger than the sum of its proper divisors (1).

3120121232009 is an equidigital number, since it uses as much as digits as its factorization.

3120121232009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 3120121232009 in words is "three trillion, one hundred twenty billion, one hundred twenty-one million, two hundred thirty-two thousand, nine".