122563365221 has 4 divisors (see below), whose sum is σ = 133705489344. Its totient is φ = 111421241100.

The previous prime is 122563365167. The next prime is 122563365259.

122563365221 is nontrivially palindromic in base 10.

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 a de Polignac number, because none of the positive numbers 2^k-122563365221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122563364221) 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, 5571062045 + ... + 5571062066.

It is an arithmetic number, because the mean of its divisors is an integer number (33426372336).

Almost surely, 2^122563365221 is an apocalyptic number.

122563365221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122563365221 is a deficient number, since it is larger than the sum of its proper divisors (11142124123).

122563365221 is a wasteful number, since it uses less digits than its factorization.

122563365221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11142124122.

The product of its digits is 129600, while the sum is 38.

It can be divided in two parts, 122563 and 365221, that added together give a palindrome (487784).

The spelling of 122563365221 in words is "one hundred twenty-two billion, five hundred sixty-three million, three hundred sixty-five thousand, two hundred twenty-one".