123122404221321 has 4 divisors (see below), whose sum is σ = 164163205628432. Its totient is φ = 82081602814212.

The previous prime is 123122404221319. The next prime is 123122404221407.

123122404221321 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 not a de Polignac number, because 123122404221321 - 2¹ = 123122404221319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123122404221301) 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, 20520400703551 + ... + 20520400703556.

It is an arithmetic number, because the mean of its divisors is an integer number (41040801407108).

Almost surely, 2^{123122404221321} is an apocalyptic number.

It is an amenable number.

123122404221321 is a deficient number, since it is larger than the sum of its proper divisors (41040801407111).

123122404221321 is an equidigital number, since it uses as much as digits as its factorization.

123122404221321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41040801407110.

The product of its (nonzero) digits is 9216, while the sum is 30.

It can be divided in two parts, 12312240 and 4221321, that added together give a palindrome (16533561).

The spelling of 123122404221321 in words is "one hundred twenty-three trillion, one hundred twenty-two billion, four hundred four million, two hundred twenty-one thousand, three hundred twenty-one".