122643564241 has 4 divisors (see below), whose sum is σ = 133792979184. Its totient is φ = 111494149300.

The previous prime is 122643564203. The next prime is 122643564247. The reversal of 122643564241 is 142465346221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 122643564241 - 2²¹ = 122641467089 is a prime.

It is a super-4 number, since 4×122643564241⁴ (a number of 45 digits) contains 4444 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122643564194 and 122643564203.

It is not an unprimeable number, because it can be changed into a prime (122643564247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5574707455 + ... + 5574707476.

It is an arithmetic number, because the mean of its divisors is an integer number (33448244796).

Almost surely, 2^122643564241 is an apocalyptic number.

122643564241 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122643564241 is a deficient number, since it is larger than the sum of its proper divisors (11149414943).

122643564241 is a wasteful number, since it uses less digits than its factorization.

122643564241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11149414942.

The product of its digits is 276480, while the sum is 40.

The spelling of 122643564241 in words is "one hundred twenty-two billion, six hundred forty-three million, five hundred sixty-four thousand, two hundred forty-one".