10121198539 has 2 divisors, whose sum is σ = 10121198540. Its totient is φ = 10121198538.

The previous prime is 10121198531. The next prime is 10121198551. The reversal of 10121198539 is 93589112101.

It is a weak prime.

It is an emirp because it is prime and its reverse (93589112101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10121198539 - 2³ = 10121198531 is a prime.

It is not a weakly prime, because it can be changed into another prime (10121198531) 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, 5060599269 + 5060599270.

It is an arithmetic number, because the mean of its divisors is an integer number (5060599270).

Almost surely, 2^10121198539 is an apocalyptic number.

10121198539 is a deficient number, since it is larger than the sum of its proper divisors (1).

10121198539 is an equidigital number, since it uses as much as digits as its factorization.

10121198539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 40.

The spelling of 10121198539 in words is "ten billion, one hundred twenty-one million, one hundred ninety-eight thousand, five hundred thirty-nine".