1220321202 has 16 divisors (see below), whose sum is σ = 2444182752. Its totient is φ = 406183680.

The previous prime is 1220321177. The next prime is 1220321203. The reversal of 1220321202 is 2021230221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1220321203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143023 + ... + 151314.

It is an arithmetic number, because the mean of its divisors is an integer number (152761422).

Almost surely, 2^1220321202 is an apocalyptic number.

1220321202 is an abundant number, since it is smaller than the sum of its proper divisors (1223861550).

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

1220321202 is a wasteful number, since it uses less digits than its factorization.

1220321202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295033.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1220321202 is about 34933.0960838000. The cubic root of 1220321202 is about 1068.6234962063.

Adding to 1220321202 its reverse (2021230221), we get a palindrome (3241551423).

The spelling of 1220321202 in words is "one billion, two hundred twenty million, three hundred twenty-one thousand, two hundred two".