1222146 has 24 divisors (see below), whose sum is σ = 2711280. Its totient is φ = 397656.

The previous prime is 1222129. The next prime is 1222157. The reversal of 1222146 is 6412221.

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

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 16 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (112970).

2^1222146 is an apocalyptic number.

1222146 is an abundant number, since it is smaller than the sum of its proper divisors (1489134).

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

1222146 is a wasteful number, since it uses less digits than its factorization.

1222146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630 (or 1627 counting only the distinct ones).

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

The square root of 1222146 is about 1105.5071234506. The cubic root of 1222146 is about 106.9155883592.

Adding to 1222146 its reverse (6412221), we get a palindrome (7634367).

The spelling of 1222146 in words is "one million, two hundred twenty-two thousand, one hundred forty-six".