12213123049 has 2 divisors, whose sum is σ = 12213123050. Its totient is φ = 12213123048.

The previous prime is 12213123001. The next prime is 12213123077. The reversal of 12213123049 is 94032131221.

It is a happy number.

It is an a-pointer prime, because the next prime (12213123077) can be obtained adding 12213123049 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11458632025 + 754491024 = 107045^2 + 27468^2 .

It is a cyclic number.

It is not a de Polignac number, because 12213123049 - 2⁷ = 12213122921 is a prime.

It is a super-2 number, since 2×12213123049² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12213123079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6106561524 + 6106561525.

It is an arithmetic number, because the mean of its divisors is an integer number (6106561525).

Almost surely, 2^12213123049 is an apocalyptic number.

It is an amenable number.

12213123049 is a deficient number, since it is larger than the sum of its proper divisors (1).

12213123049 is an equidigital number, since it uses as much as digits as its factorization.

12213123049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 12213123049 in words is "twelve billion, two hundred thirteen million, one hundred twenty-three thousand, forty-nine".