1222600 has 24 divisors (see below), whose sum is σ = 2843010. Its totient is φ = 488960.

The previous prime is 1222597. The next prime is 1222601. The reversal of 1222600 is 62221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 933156 + 289444 = 966^2 + 538^2 .

It is not an unprimeable number, because it can be changed into a prime (1222601) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2857 + ... + 3256.

2^1222600 is an apocalyptic number.

1222600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222600 is an abundant number, since it is smaller than the sum of its proper divisors (1620410).

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

1222600 is a wasteful number, since it uses less digits than its factorization.

1222600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6129 (or 6120 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1222600 is about 1105.7124400132. The cubic root of 1222600 is about 106.9288256396.

Adding to 1222600 its reverse (62221), we get a palindrome (1284821).

The spelling of 1222600 in words is "one million, two hundred twenty-two thousand, six hundred".