122305904638 has 8 divisors (see below), whose sum is σ = 183478338000. Its totient is φ = 61146458640.

The previous prime is 122305904627. The next prime is 122305904641. The reversal of 122305904638 is 836409503221.

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

It is a super-2 number, since 2×122305904638² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122305904594 and 122305904603.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3223263 + ... + 3260986.

It is an arithmetic number, because the mean of its divisors is an integer number (22934792250).

Almost surely, 2^122305904638 is an apocalyptic number.

122305904638 is a deficient number, since it is larger than the sum of its proper divisors (61172433362).

122305904638 is an equidigital number, since it uses as much as digits as its factorization.

122305904638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6493682.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 122305904638 in words is "one hundred twenty-two billion, three hundred five million, nine hundred four thousand, six hundred thirty-eight".