12122121793 has 2 divisors, whose sum is σ = 12122121794. Its totient is φ = 12122121792.

The previous prime is 12122121763. The next prime is 12122121833. The reversal of 12122121793 is 39712122121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6747472449 + 5374649344 = 82143^2 + 73312^2 .

It is a cyclic number.

It is not a de Polignac number, because 12122121793 - 2²¹ = 12120024641 is a prime.

It is not a weakly prime, because it can be changed into another prime (12122121703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061060896 + 6061060897.

It is an arithmetic number, because the mean of its divisors is an integer number (6061060897).

Almost surely, 2^12122121793 is an apocalyptic number.

It is an amenable number.

12122121793 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122121793 is an equidigital number, since it uses as much as digits as its factorization.

12122121793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 31.

The spelling of 12122121793 in words is "twelve billion, one hundred twenty-two million, one hundred twenty-one thousand, seven hundred ninety-three".