1322220 has 24 divisors (see below), whose sum is σ = 3702384. Its totient is φ = 352576.

The previous prime is 1322219. The next prime is 1322221. The reversal of 1322220 is 222231.

It is an interprime number because it is at equal distance from previous prime (1322219) and next prime (1322221).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1322196 and 1322205.

It is not an unprimeable number, because it can be changed into a prime (1322221) 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, 10959 + ... + 11078.

It is an arithmetic number, because the mean of its divisors is an integer number (154266).

2^1322220 is an apocalyptic number.

1322220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1322220 is an abundant number, since it is smaller than the sum of its proper divisors (2380164).

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

1322220 is a wasteful number, since it uses less digits than its factorization.

1322220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22049 (or 22047 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1322220 is about 1149.8782544252. The cubic root of 1322220 is about 109.7575929215.

Adding to 1322220 its reverse (222231), we get a palindrome (1544451).

The spelling of 1322220 in words is "one million, three hundred twenty-two thousand, two hundred twenty".