12120021941 has 2 divisors, whose sum is σ = 12120021942. Its totient is φ = 12120021940.

The previous prime is 12120021889. The next prime is 12120022001. The reversal of 12120021941 is 14912002121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12041770225 + 78251716 = 109735^2 + 8846^2 .

It is a cyclic number.

It is not a de Polignac number, because 12120021941 - 2⁶ = 12120021877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12120021041) 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, 6060010970 + 6060010971.

It is an arithmetic number, because the mean of its divisors is an integer number (6060010971).

Almost surely, 2^12120021941 is an apocalyptic number.

It is an amenable number.

12120021941 is a deficient number, since it is larger than the sum of its proper divisors (1).

12120021941 is an equidigital number, since it uses as much as digits as its factorization.

12120021941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 12120021941 in words is "twelve billion, one hundred twenty million, twenty-one thousand, nine hundred forty-one".