122443999999 has 2 divisors, whose sum is σ = 122444000000. Its totient is φ = 122443999998.

The previous prime is 122443999991. The next prime is 122444000017. The reversal of 122443999999 is 999999344221.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (999999344221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122443999999 - 2³ = 122443999991 is a prime.

It is a super-2 number, since 2×122443999999² (a number of 23 digits) contains 22 as substring.

122443999999 is a modest number, since divided by 999999 gives 122443 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122443999991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61221999999 + 61222000000.

It is an arithmetic number, because the mean of its divisors is an integer number (61222000000).

Almost surely, 2^122443999999 is an apocalyptic number.

122443999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

122443999999 is an equidigital number, since it uses as much as digits as its factorization.

122443999999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 102036672, while the sum is 70.

The spelling of 122443999999 in words is "one hundred twenty-two billion, four hundred forty-three million, nine hundred ninety-nine thousand, nine hundred ninety-nine".