139122121219 has 2 divisors, whose sum is σ = 139122121220. Its totient is φ = 139122121218.

The previous prime is 139122121207. The next prime is 139122121279. The reversal of 139122121219 is 912121221931.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139122121219 - 2¹⁵ = 139122088451 is a prime.

It is a super-2 number, since 2×139122121219² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (139122121279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69561060609 + 69561060610.

It is an arithmetic number, because the mean of its divisors is an integer number (69561060610).

Almost surely, 2^139122121219 is an apocalyptic number.

139122121219 is a deficient number, since it is larger than the sum of its proper divisors (1).

139122121219 is an equidigital number, since it uses as much as digits as its factorization.

139122121219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 34.

The spelling of 139122121219 in words is "one hundred thirty-nine billion, one hundred twenty-two million, one hundred twenty-one thousand, two hundred nineteen".