12203203949 has 2 divisors, whose sum is σ = 12203203950. Its totient is φ = 12203203948.

The previous prime is 12203203933. The next prime is 12203204021. The reversal of 12203203949 is 94930230221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12177122500 + 26081449 = 110350^2 + 5107^2 .

It is a cyclic number.

It is not a de Polignac number, because 12203203949 - 2⁴ = 12203203933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12203203249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6101601974 + 6101601975.

It is an arithmetic number, because the mean of its divisors is an integer number (6101601975).

Almost surely, 2^12203203949 is an apocalyptic number.

It is an amenable number.

12203203949 is a deficient number, since it is larger than the sum of its proper divisors (1).

12203203949 is an equidigital number, since it uses as much as digits as its factorization.

12203203949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 35.

The spelling of 12203203949 in words is "twelve billion, two hundred three million, two hundred three thousand, nine hundred forty-nine".