12210312121291 has 2 divisors, whose sum is σ = 12210312121292. Its totient is φ = 12210312121290.

The previous prime is 12210312121289. The next prime is 12210312121409. The reversal of 12210312121291 is 19212121301221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12210312121291 - 2¹ = 12210312121289 is a prime.

Together with 12210312121289, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12210312121991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105156060645 + 6105156060646.

It is an arithmetic number, because the mean of its divisors is an integer number (6105156060646).

Almost surely, 2^{12210312121291} is an apocalyptic number.

12210312121291 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210312121291 is an equidigital number, since it uses as much as digits as its factorization.

12210312121291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 12210312121291 in words is "twelve trillion, two hundred ten billion, three hundred twelve million, one hundred twenty-one thousand, two hundred ninety-one".