122012839489 has 2 divisors, whose sum is σ = 122012839490. Its totient is φ = 122012839488.

The previous prime is 122012839483. The next prime is 122012839499. The reversal of 122012839489 is 984938210221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120200890000 + 1811949489 = 346700^2 + 42567^2 .

It is a cyclic number.

It is not a de Polignac number, because 122012839489 - 2⁹ = 122012838977 is a prime.

It is a super-2 number, since 2×122012839489² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122012839483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61006419744 + 61006419745.

It is an arithmetic number, because the mean of its divisors is an integer number (61006419745).

Almost surely, 2^122012839489 is an apocalyptic number.

It is an amenable number.

122012839489 is a deficient number, since it is larger than the sum of its proper divisors (1).

122012839489 is an equidigital number, since it uses as much as digits as its factorization.

122012839489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 49.

The spelling of 122012839489 in words is "one hundred twenty-two billion, twelve million, eight hundred thirty-nine thousand, four hundred eighty-nine".