400330177221 has 32 divisors (see below), whose sum is σ = 580662270720. Its totient is φ = 243859968000.

The previous prime is 400330177199. The next prime is 400330177253. The reversal of 400330177221 is 122771033004.

It is not a de Polignac number, because 400330177221 - 2¹¹ = 400330175173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400330177021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21422760 + ... + 21441438.

It is an arithmetic number, because the mean of its divisors is an integer number (18145695960).

Almost surely, 2^400330177221 is an apocalyptic number.

It is an amenable number.

400330177221 is a deficient number, since it is larger than the sum of its proper divisors (180332093499).

400330177221 is a wasteful number, since it uses less digits than its factorization.

400330177221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24237.

The product of its (nonzero) digits is 7056, while the sum is 30.

The spelling of 400330177221 in words is "four hundred billion, three hundred thirty million, one hundred seventy-seven thousand, two hundred twenty-one".