381000222 has 12 divisors (see below), whose sum is σ = 825500520. Its totient is φ = 127000068.

The previous prime is 381000203. The next prime is 381000227. The reversal of 381000222 is 222000183.

It is a happy number.

It is a super-2 number, since 2×381000222² = 290322338328098568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 21166679 = 381000222 / (3 + 8 + 1 + 0 + 0 + 0 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 381000195 and 381000204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381000227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10583322 + ... + 10583357.

It is an arithmetic number, because the mean of its divisors is an integer number (68791710).

Almost surely, 2^381000222 is an apocalyptic number.

381000222 is an abundant number, since it is smaller than the sum of its proper divisors (444500298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381000222 is a wasteful number, since it uses less digits than its factorization.

381000222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21166687 (or 21166684 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 381000222 is about 19519.2269826446. The cubic root of 381000222 is about 724.9505932245.

The spelling of 381000222 in words is "three hundred eighty-one million, two hundred twenty-two", and thus it is an aban number.