1216226 has 16 divisors (see below), whose sum is σ = 2026080. Its totient is φ = 542880.

The previous prime is 1216213. The next prime is 1216249. The reversal of 1216226 is 6226121.

It is a happy number.

It is a super-3 number, since 3×1216226³ = 5397145233314373528, which contains 333 as substring.

It is a Curzon number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 1216198 and 1216207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 830 + ... + 1766.

It is an arithmetic number, because the mean of its divisors is an integer number (126630).

2^1216226 is an apocalyptic number.

1216226 is a deficient number, since it is larger than the sum of its proper divisors (809854).

1216226 is a wasteful number, since it uses less digits than its factorization.

1216226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009.

The product of its digits is 288, while the sum is 20.

The square root of 1216226 is about 1102.8263689267. The cubic root of 1216226 is about 106.7426780258.

The spelling of 1216226 in words is "one million, two hundred sixteen thousand, two hundred twenty-six".