111421241013997 has 2 divisors, whose sum is σ = 111421241013998. Its totient is φ = 111421241013996.

The previous prime is 111421241013959. The next prime is 111421241014003. The reversal of 111421241013997 is 799310142124111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100592495035561 + 10828745978436 = 10029581^2 + 3290706^2 .

It is an emirp because it is prime and its reverse (799310142124111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111421241013997 - 2¹⁵ = 111421240981229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111421241013937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55710620506998 + 55710620506999.

It is an arithmetic number, because the mean of its divisors is an integer number (55710620506999).

Almost surely, 2^{111421241013997} is an apocalyptic number.

It is an amenable number.

111421241013997 is a deficient number, since it is larger than the sum of its proper divisors (1).

111421241013997 is an equidigital number, since it uses as much as digits as its factorization.

111421241013997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 46.

The spelling of 111421241013997 in words is "one hundred eleven trillion, four hundred twenty-one billion, two hundred forty-one million, thirteen thousand, nine hundred ninety-seven".