122621442305 has 8 divisors (see below), whose sum is σ = 149161426152. Its totient is φ = 96753356928.

The previous prime is 122621442287. The next prime is 122621442341. The reversal of 122621442305 is 503244126221.

It can be written as a sum of positive squares in 4 ways, for example, as 2633331856 + 119988110449 = 51316^2 + 346393^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 122621442305 - 2⁶ = 122621442241 is a prime.

It is a super-2 number, since 2×122621442305² (a number of 23 digits) contains 22 as substring.

It is a Duffinian 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 7 ways as a sum of consecutive naturals, for example, 167974214 + ... + 167974943.

It is an arithmetic number, because the mean of its divisors is an integer number (18645178269).

Almost surely, 2^122621442305 is an apocalyptic number.

It is an amenable number.

122621442305 is a deficient number, since it is larger than the sum of its proper divisors (26539983847).

122621442305 is an equidigital number, since it uses as much as digits as its factorization.

122621442305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335949235.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 122621442305 its reverse (503244126221), we get a palindrome (625865568526).

The spelling of 122621442305 in words is "one hundred twenty-two billion, six hundred twenty-one million, four hundred forty-two thousand, three hundred five".