122867421613 has 4 divisors (see below), whose sum is σ = 130094917020. Its totient is φ = 115639926208.

The previous prime is 122867421577. The next prime is 122867421629. The reversal of 122867421613 is 316124768221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55320451209 + 67546970404 = 235203^2 + 259898^2 .

It is a cyclic number.

It is not a de Polignac number, because 122867421613 - 2²⁵ = 122833867181 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122867421613.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122867428613) 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 in 3 ways as a sum of consecutive naturals, for example, 3613747678 + ... + 3613747711.

It is an arithmetic number, because the mean of its divisors is an integer number (32523729255).

Almost surely, 2^122867421613 is an apocalyptic number.

It is an amenable number.

122867421613 is a deficient number, since it is larger than the sum of its proper divisors (7227495407).

122867421613 is an equidigital number, since it uses as much as digits as its factorization.

122867421613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7227495406.

The product of its digits is 193536, while the sum is 43.

The spelling of 122867421613 in words is "one hundred twenty-two billion, eight hundred sixty-seven million, four hundred twenty-one thousand, six hundred thirteen".