122646646221 has 8 divisors (see below), whose sum is σ = 178395121824. Its totient is φ = 74331300720.

The previous prime is 122646646207. The next prime is 122646646223.

122646646221 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 122646646221 - 2⁵ = 122646646189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122646646223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1858282486 + ... + 1858282551.

It is an arithmetic number, because the mean of its divisors is an integer number (22299390228).

Almost surely, 2^122646646221 is an apocalyptic number.

122646646221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122646646221 is a deficient number, since it is larger than the sum of its proper divisors (55748475603).

122646646221 is a wasteful number, since it uses less digits than its factorization.

122646646221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3716565051.

The product of its digits is 331776, while the sum is 42.

It can be divided in two parts, 122646 and 646221, that added together give a palindrome (768867).

The spelling of 122646646221 in words is "one hundred twenty-two billion, six hundred forty-six million, six hundred forty-six thousand, two hundred twenty-one".