403234401221 has 4 divisors (see below), whose sum is σ = 403237911744. Its totient is φ = 403230890700.

The previous prime is 403234401217. The next prime is 403234401223. The reversal of 403234401221 is 122104432304.

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 403234401221 - 2² = 403234401217 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 (403234401223) 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, 1576925 + ... + 1814706.

It is an arithmetic number, because the mean of its divisors is an integer number (100809477936).

Almost surely, 2^403234401221 is an apocalyptic number.

It is an amenable number.

403234401221 is a deficient number, since it is larger than the sum of its proper divisors (3510523).

403234401221 is a wasteful number, since it uses less digits than its factorization.

403234401221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3510522.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 403234401221 its reverse (122104432304), we get a palindrome (525338833525).

The spelling of 403234401221 in words is "four hundred three billion, two hundred thirty-four million, four hundred one thousand, two hundred twenty-one".