1210220 has 24 divisors (see below), whose sum is σ = 2773008. Its totient is φ = 440000.

The previous prime is 1210211. The next prime is 1210229. The reversal of 1210220 is 220121.

It is an interprime number because it is at equal distance from previous prime (1210211) and next prime (1210229).

It is a junction number, because it is equal to n+sod(n) for n = 1210198 and 1210207.

It is not an unprimeable number, because it can be changed into a prime (1210229) 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, 2531 + ... + 2970.

It is an arithmetic number, because the mean of its divisors is an integer number (115542).

2^1210220 is an apocalyptic number.

1210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210220 is an abundant number, since it is smaller than the sum of its proper divisors (1562788).

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

1210220 is a wasteful number, since it uses less digits than its factorization.

1210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5521 (or 5519 counting only the distinct ones).

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

The square root of 1210220 is about 1100.0999954550. The cubic root of 1210220 is about 106.5666814807.

Adding to 1210220 its reverse (220121), we get a palindrome (1430341).

Subtracting from 1210220 its reverse (220121), we obtain a palindrome (990099).

The spelling of 1210220 in words is "one million, two hundred ten thousand, two hundred twenty".