122999999999 has 4 divisors (see below), whose sum is σ = 123968504064. Its totient is φ = 122031495936.

The previous prime is 122999999981. The next prime is 123000000143. The reversal of 122999999999 is 999999999221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999999999221 = 31 ⋅32258064491.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122999999999 is a prime.

It is a Duffinian number.

122999999999 is a modest number, since divided by 999999 gives 122999 as remainder.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 122999999999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122999999939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 484251842 + ... + 484252095.

It is an arithmetic number, because the mean of its divisors is an integer number (30992126016).

Almost surely, 2^122999999999 is an apocalyptic number.

122999999999 is a deficient number, since it is larger than the sum of its proper divisors (968504065).

122999999999 is an equidigital number, since it uses as much as digits as its factorization.

122999999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968504064.

The product of its digits is 1549681956, while the sum is 86.

The spelling of 122999999999 in words is "one hundred twenty-two billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".