380305221 has 4 divisors (see below), whose sum is σ = 507073632. Its totient is φ = 253536812.

The previous prime is 380305193. The next prime is 380305223. The reversal of 380305221 is 122503083.

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 380305221 - 2⁹ = 380304709 is a prime.

It is a super-2 number, since 2×380305221² = 289264122239717682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 380305191 and 380305200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (380305223) 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, 63384201 + ... + 63384206.

It is an arithmetic number, because the mean of its divisors is an integer number (126768408).

Almost surely, 2^380305221 is an apocalyptic number.

It is an amenable number.

380305221 is a deficient number, since it is larger than the sum of its proper divisors (126768411).

380305221 is a wasteful number, since it uses less digits than its factorization.

380305221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126768410.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 380305221 is about 19501.4158716745. The cubic root of 380305221 is about 724.5095190645.

The spelling of 380305221 in words is "three hundred eighty million, three hundred five thousand, two hundred twenty-one".