122172878126 has 8 divisors (see below), whose sum is σ = 197356187784. Its totient is φ = 56387482200.

The previous prime is 122172878111. The next prime is 122172878153. The reversal of 122172878126 is 621878271221.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2349478400 + ... + 2349478451.

It is an arithmetic number, because the mean of its divisors is an integer number (24669523473).

Almost surely, 2^122172878126 is an apocalyptic number.

122172878126 is a deficient number, since it is larger than the sum of its proper divisors (75183309658).

122172878126 is a wasteful number, since it uses less digits than its factorization.

122172878126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4698956866.

The product of its digits is 301056, while the sum is 47.

The spelling of 122172878126 in words is "one hundred twenty-two billion, one hundred seventy-two million, eight hundred seventy-eight thousand, one hundred twenty-six".