1222236 has 24 divisors (see below), whose sum is σ = 3169040. Its totient is φ = 407376.

The previous prime is 1222231. The next prime is 1222241. The reversal of 1222236 is 6322221.

It is an interprime number because it is at equal distance from previous prime (1222231) and next prime (1222241).

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5551 + ... + 5766.

2^1222236 is an apocalyptic number.

It is an amenable number.

1222236 is an abundant number, since it is smaller than the sum of its proper divisors (1946804).

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

1222236 is a wasteful number, since it uses less digits than its factorization.

1222236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11330 (or 11322 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 1222236 is about 1105.5478280020. The cubic root of 1222236 is about 106.9182127501.

Adding to 1222236 its reverse (6322221), we get a palindrome (7544457).

The spelling of 1222236 in words is "one million, two hundred twenty-two thousand, two hundred thirty-six".