2512121023309 has 2 divisors, whose sum is σ = 2512121023310. Its totient is φ = 2512121023308.

The previous prime is 2512121023189. The next prime is 2512121023343. The reversal of 2512121023309 is 9033201212152.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2443688032900 + 68432990409 = 1563230^2 + 261597^2 .

It is a cyclic number.

It is not a de Polignac number, because 2512121023309 - 2³⁵ = 2477761284941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2512121023369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1256060511654 + 1256060511655.

It is an arithmetic number, because the mean of its divisors is an integer number (1256060511655).

Almost surely, 2^{2512121023309} is an apocalyptic number.

It is an amenable number.

2512121023309 is a deficient number, since it is larger than the sum of its proper divisors (1).

2512121023309 is an equidigital number, since it uses as much as digits as its factorization.

2512121023309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 2512121023309 in words is "two trillion, five hundred twelve billion, one hundred twenty-one million, twenty-three thousand, three hundred nine".