381222 has 12 divisors (see below), whose sum is σ = 826020. Its totient is φ = 127068.

The previous prime is 381221. The next prime is 381223. The reversal of 381222 is 222183.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (381221) and next prime (381223).

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: 21179 = 381222 / (3 + 8 + 1 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 381195 and 381204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381221) 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, 10572 + ... + 10607.

It is an arithmetic number, because the mean of its divisors is an integer number (68835).

2³⁸¹²²² is an apocalyptic number.

381222 is an abundant number, since it is smaller than the sum of its proper divisors (444798).

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

381222 is a wasteful number, since it uses less digits than its factorization.

381222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21187 (or 21184 counting only the distinct ones).

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

The square root of 381222 is about 617.4317776079. The cubic root of 381222 is about 72.5091229106.

It can be divided in two parts, 3 and 81222, that added together give a square (81225 = 285²).

The spelling of 381222 in words is "three hundred eighty-one thousand, two hundred twenty-two".