122139645267 has 8 divisors (see below), whose sum is σ = 168106178560. Its totient is φ = 78799771080.

The previous prime is 122139645223. The next prime is 122139645293. The reversal of 122139645267 is 762546931221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122139645267 - 2¹⁹ = 122139120979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122139745267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 656664667 + ... + 656664852.

It is an arithmetic number, because the mean of its divisors is an integer number (21013272320).

Almost surely, 2^122139645267 is an apocalyptic number.

122139645267 is a deficient number, since it is larger than the sum of its proper divisors (45966533293).

122139645267 is a wasteful number, since it uses less digits than its factorization.

122139645267 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313329553.

The product of its digits is 1088640, while the sum is 48.

The spelling of 122139645267 in words is "one hundred twenty-two billion, one hundred thirty-nine million, six hundred forty-five thousand, two hundred sixty-seven".