12120009893 has 2 divisors, whose sum is σ = 12120009894. Its totient is φ = 12120009892.

The previous prime is 12120009851. The next prime is 12120009917. The reversal of 12120009893 is 39890002121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9592635364 + 2527374529 = 97942^2 + 50273^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120009893 - 2¹⁰ = 12120008869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120009833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060004946 + 6060004947.

It is an arithmetic number, because the mean of its divisors is an integer number (6060004947).

Almost surely, 2^12120009893 is an apocalyptic number.

It is an amenable number.

12120009893 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120009893 is an equidigital number, since it uses as much as digits as its factorization.

12120009893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 35.

The spelling of 12120009893 in words is "twelve billion, one hundred twenty million, nine thousand, eight hundred ninety-three".