122452543221 has 4 divisors (see below), whose sum is σ = 163270057632. Its totient is φ = 81635028812.

The previous prime is 122452543207. The next prime is 122452543231. The reversal of 122452543221 is 122345254221.

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 122452543221 - 2⁷ = 122452543093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122452543231) 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, 20408757201 + ... + 20408757206.

It is an arithmetic number, because the mean of its divisors is an integer number (40817514408).

Almost surely, 2^122452543221 is an apocalyptic number.

It is an amenable number.

122452543221 is a deficient number, since it is larger than the sum of its proper divisors (40817514411).

122452543221 is an equidigital number, since it uses as much as digits as its factorization.

122452543221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40817514410.

The product of its digits is 38400, while the sum is 33.

Adding to 122452543221 its reverse (122345254221), we get a palindrome (244797797442).

The spelling of 122452543221 in words is "one hundred twenty-two billion, four hundred fifty-two million, five hundred forty-three thousand, two hundred twenty-one".