1222000 has 80 divisors (see below), whose sum is σ = 3249792. Its totient is φ = 441600.

The previous prime is 1221971. The next prime is 1222003. The reversal of 1222000 is 2221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25977 + ... + 26023.

2^1222000 is an apocalyptic number.

1222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1624896).

1222000 is an abundant number, since it is smaller than the sum of its proper divisors (2027792).

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

1222000 is a wasteful number, since it uses less digits than its factorization.

1222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 1222000 is about 1105.4410884348. The cubic root of 1222000 is about 106.9113307398.

Adding to 1222000 its reverse (2221), we get a palindrome (1224221).

The spelling of 1222000 in words is "one million, two hundred twenty-two thousand".