122563612541 has 4 divisors (see below), whose sum is σ = 122636008572. Its totient is φ = 122491216512.

The previous prime is 122563612517. The next prime is 122563612559. The reversal of 122563612541 is 145216365221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 145216365221 = 73 ⋅1989265277.

It can be written as a sum of positive squares in 2 ways, for example, as 33762592516 + 88801020025 = 183746^2 + 297995^2 .

It is a cyclic number.

It is not a de Polignac number, because 122563612541 - 2³⁰ = 121489870717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122563612495 and 122563612504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122563612741) 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, 36195476 + ... + 36198861.

It is an arithmetic number, because the mean of its divisors is an integer number (30659002143).

Almost surely, 2^122563612541 is an apocalyptic number.

It is an amenable number.

122563612541 is a deficient number, since it is larger than the sum of its proper divisors (72396031).

122563612541 is an equidigital number, since it uses as much as digits as its factorization.

122563612541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72396030.

The product of its digits is 86400, while the sum is 38.

Adding to 122563612541 its reverse (145216365221), we get a palindrome (267779977762).

The spelling of 122563612541 in words is "one hundred twenty-two billion, five hundred sixty-three million, six hundred twelve thousand, five hundred forty-one".