1220202 has 12 divisors (see below), whose sum is σ = 2643810. Its totient is φ = 406728.

The previous prime is 1220171. The next prime is 1220203. The reversal of 1220202 is 2020221.

It can be written as a sum of positive squares in only one way, i.e., 772641 + 447561 = 879^2 + 669^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

1220202 is a modest number, since divided by 202 gives 122 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1220203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33877 + ... + 33912.

2^1220202 is an apocalyptic number.

1220202 is an abundant number, since it is smaller than the sum of its proper divisors (1423608).

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

1220202 is a wasteful number, since it uses less digits than its factorization.

1220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67797 (or 67794 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1220202 is about 1104.6275390375. The cubic root of 1220202 is about 106.8588700393.

Adding to 1220202 its reverse (2020221), we get a palindrome (3240423).

The spelling of 1220202 in words is "one million, two hundred twenty thousand, two hundred two".