1222810 has 16 divisors (see below), whose sum is σ = 2330856. Its totient is φ = 460288.

The previous prime is 1222801. The next prime is 1222811. The reversal of 1222810 is 182221.

It can be written as a sum of positive squares in 4 ways, for example, as 851929 + 370881 = 923^2 + 609^2 .

It is a super-2 number, since 2×1222810² = 2990528592200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1222811) 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, 3427 + ... + 3766.

2^1222810 is an apocalyptic number.

1222810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222810 is a deficient number, since it is larger than the sum of its proper divisors (1108046).

1222810 is a wasteful number, since it uses less digits than its factorization.

1222810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7217.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1222810 is about 1105.8073973346. The cubic root of 1222810 is about 106.9349475022.

It can be divided in two parts, 12 and 22810, that added together give a palindrome (22822).

The spelling of 1222810 in words is "one million, two hundred twenty-two thousand, eight hundred ten".