1222770 has 16 divisors (see below), whose sum is σ = 2934720. Its totient is φ = 326064.

The previous prime is 1222769. The next prime is 1222777. The reversal of 1222770 is 772221.

It is not an unprimeable number, because it can be changed into a prime (1222777) 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, 20350 + ... + 20409.

It is an arithmetic number, because the mean of its divisors is an integer number (183420).

2^1222770 is an apocalyptic number.

1222770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222770 is an abundant number, since it is smaller than the sum of its proper divisors (1711950).

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

1222770 is a wasteful number, since it uses less digits than its factorization.

1222770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40769.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 1222770 is about 1105.7893108545. The cubic root of 1222770 is about 106.9337814872.

Adding to 1222770 its reverse (772221), we get a palindrome (1994991).

The spelling of 1222770 in words is "one million, two hundred twenty-two thousand, seven hundred seventy".