12121202279 has 2 divisors, whose sum is σ = 12121202280. Its totient is φ = 12121202278.

The previous prime is 12121202201. The next prime is 12121202293. The reversal of 12121202279 is 97220212121.

It is a strong prime.

It is an emirp because it is prime and its reverse (97220212121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121202279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12121202179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060601139 + 6060601140.

It is an arithmetic number, because the mean of its divisors is an integer number (6060601140).

Almost surely, 2^12121202279 is an apocalyptic number.

12121202279 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121202279 is an equidigital number, since it uses as much as digits as its factorization.

12121202279 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The spelling of 12121202279 in words is "twelve billion, one hundred twenty-one million, two hundred two thousand, two hundred seventy-nine".