122512300221 has 4 divisors (see below), whose sum is σ = 163349733632. Its totient is φ = 81674866812.

The previous prime is 122512300217. The next prime is 122512300241. The reversal of 122512300221 is 122003215221.

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 not a de Polignac number, because 122512300221 - 2² = 122512300217 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 (122512300241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20418716701 + ... + 20418716706.

It is an arithmetic number, because the mean of its divisors is an integer number (40837433408).

Almost surely, 2^122512300221 is an apocalyptic number.

It is an amenable number.

122512300221 is a deficient number, since it is larger than the sum of its proper divisors (40837433411).

122512300221 is an equidigital number, since it uses as much as digits as its factorization.

122512300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40837433410.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 122512300221 its reverse (122003215221), we get a palindrome (244515515442).

The spelling of 122512300221 in words is "one hundred twenty-two billion, five hundred twelve million, three hundred thousand, two hundred twenty-one".