405055034221 has 4 divisors (see below), whose sum is σ = 405061573600. Its totient is φ = 405048494844.

The previous prime is 405055034149. The next prime is 405055034261. The reversal of 405055034221 is 122430550504.

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 405055034221 - 2¹⁹ = 405054509933 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 (405055034261) 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, 3175881 + ... + 3300958.

It is an arithmetic number, because the mean of its divisors is an integer number (101265393400).

Almost surely, 2^405055034221 is an apocalyptic number.

It is an amenable number.

405055034221 is a deficient number, since it is larger than the sum of its proper divisors (6539379).

405055034221 is an equidigital number, since it uses as much as digits as its factorization.

405055034221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6539378.

The product of its (nonzero) digits is 24000, while the sum is 31.

Adding to 405055034221 its reverse (122430550504), we get a palindrome (527485584725).

The spelling of 405055034221 in words is "four hundred five billion, fifty-five million, thirty-four thousand, two hundred twenty-one".