1122381 has 24 divisors (see below), whose sum is σ = 1788696. Its totient is φ = 673920.

The previous prime is 1122371. The next prime is 1122389. The reversal of 1122381 is 1832211.

It can be written as a sum of positive squares in 4 ways, for example, as 900 + 1121481 = 30^2 + 1059^2 .

It is not a de Polignac number, because 1122381 - 2¹⁰ = 1121357 is a prime.

It is a super-2 number, since 2×1122381² = 2519478218322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6111 + ... + 6291.

It is an arithmetic number, because the mean of its divisors is an integer number (74529).

2^1122381 is an apocalyptic number.

It is an amenable number.

1122381 is a deficient number, since it is larger than the sum of its proper divisors (666315).

1122381 is a wasteful number, since it uses less digits than its factorization.

1122381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 250 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1122381 is about 1059.4248439602. The cubic root of 1122381 is about 103.9234211903.

Adding to 1122381 its reverse (1832211), we get a palindrome (2954592).

The spelling of 1122381 in words is "one million, one hundred twenty-two thousand, three hundred eighty-one".