122404100305513 has 4 divisors (see below), whose sum is σ = 131819800329028. Its totient is φ = 112988400282000.

The previous prime is 122404100305457. The next prime is 122404100305537. The reversal of 122404100305513 is 315503001404221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 58418307516969 + 63985792788544 = 7643187^2 + 7999112^2 .

It is a cyclic number.

It is not a de Polignac number, because 122404100305513 - 2⁴¹ = 120205077049961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122404100335513) 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, 4707850011738 + ... + 4707850011763.

It is an arithmetic number, because the mean of its divisors is an integer number (32954950082257).

Almost surely, 2^{122404100305513} is an apocalyptic number.

122404100305513 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

122404100305513 is a deficient number, since it is larger than the sum of its proper divisors (9415700023515).

122404100305513 is an equidigital number, since it uses as much as digits as its factorization.

122404100305513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9415700023514.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 122404100305513 its reverse (315503001404221), we get a palindrome (437907101709734).

The spelling of 122404100305513 in words is "one hundred twenty-two trillion, four hundred four billion, one hundred million, three hundred five thousand, five hundred thirteen".