404022223121 has 4 divisors (see below), whose sum is σ = 440751516144. Its totient is φ = 367292930100.

The previous prime is 404022223067. The next prime is 404022223123. The reversal of 404022223121 is 121322220404.

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 404022223121 - 2¹⁸ = 404021960977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (404022223123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18364646495 + ... + 18364646516.

It is an arithmetic number, because the mean of its divisors is an integer number (110187879036).

Almost surely, 2^404022223121 is an apocalyptic number.

It is an amenable number.

404022223121 is a deficient number, since it is larger than the sum of its proper divisors (36729293023).

404022223121 is a wasteful number, since it uses less digits than its factorization.

404022223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36729293022.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 404022223121 its reverse (121322220404), we get a palindrome (525344443525).

The spelling of 404022223121 in words is "four hundred four billion, twenty-two million, two hundred twenty-three thousand, one hundred twenty-one".