12222156893 has 2 divisors, whose sum is σ = 12222156894. Its totient is φ = 12222156892.

The previous prime is 12222156889. The next prime is 12222156941. The reversal of 12222156893 is 39865122221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12082846084 + 139310809 = 109922^2 + 11803^2 .

It is an emirp because it is prime and its reverse (39865122221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12222156893 - 2² = 12222156889 is a prime.

It is a super-2 number, since 2×12222156893² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12222156893.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12222156883) 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, 6111078446 + 6111078447.

It is an arithmetic number, because the mean of its divisors is an integer number (6111078447).

Almost surely, 2^12222156893 is an apocalyptic number.

It is an amenable number.

12222156893 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222156893 is an equidigital number, since it uses as much as digits as its factorization.

12222156893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 41.

The spelling of 12222156893 in words is "twelve billion, two hundred twenty-two million, one hundred fifty-six thousand, eight hundred ninety-three".