404672133221 has 2 divisors, whose sum is σ = 404672133222. Its totient is φ = 404672133220.

The previous prime is 404672133199. The next prime is 404672133233. The reversal of 404672133221 is 122331276404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 229541601025 + 175130532196 = 479105^2 + 418486^2 .

It is a cyclic number.

It is not a de Polignac number, because 404672133221 - 2¹⁸ = 404671871077 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404672633221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202336066610 + 202336066611.

It is an arithmetic number, because the mean of its divisors is an integer number (202336066611).

Almost surely, 2^404672133221 is an apocalyptic number.

It is an amenable number.

404672133221 is a deficient number, since it is larger than the sum of its proper divisors (1).

404672133221 is an equidigital number, since it uses as much as digits as its factorization.

404672133221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 404672133221 in words is "four hundred four billion, six hundred seventy-two million, one hundred thirty-three thousand, two hundred twenty-one".