12139542223397 has 2 divisors, whose sum is σ = 12139542223398. Its totient is φ = 12139542223396.

The previous prime is 12139542223313. The next prime is 12139542223441. The reversal of 12139542223397 is 79332224593121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7066659905761 + 5072882317636 = 2658319^2 + 2252306^2 .

It is a cyclic number.

It is not a de Polignac number, because 12139542223397 - 2²⁰ = 12139541174821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12139542228397) 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, 6069771111698 + 6069771111699.

It is an arithmetic number, because the mean of its divisors is an integer number (6069771111699).

Almost surely, 2^{12139542223397} is an apocalyptic number.

It is an amenable number.

12139542223397 is a deficient number, since it is larger than the sum of its proper divisors (1).

12139542223397 is an equidigital number, since it uses as much as digits as its factorization.

12139542223397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 53.

The spelling of 12139542223397 in words is "twelve trillion, one hundred thirty-nine billion, five hundred forty-two million, two hundred twenty-three thousand, three hundred ninety-seven".