378571221 has 12 divisors (see below), whose sum is σ = 624943072. Its totient is φ = 216326376.

The previous prime is 378571187. The next prime is 378571223. The reversal of 378571221 is 122175873.

It is not a de Polignac number, because 378571221 - 2¹⁰ = 378570197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378571223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3004471 + ... + 3004596.

Almost surely, 2^378571221 is an apocalyptic number.

It is an amenable number.

378571221 is a deficient number, since it is larger than the sum of its proper divisors (246371851).

378571221 is a wasteful number, since it uses less digits than its factorization.

378571221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6009080 (or 6009077 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 378571221 is about 19456.9067685488. The cubic root of 378571221 is about 723.4067086096.

The spelling of 378571221 in words is "three hundred seventy-eight million, five hundred seventy-one thousand, two hundred twenty-one".