1221030202 has 48 divisors (see below), whose sum is σ = 2271230208. Its totient is φ = 481962240.

The previous prime is 1221030199. The next prime is 1221030257. The reversal of 1221030202 is 2020301221.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186952 + ... + 193372.

It is an arithmetic number, because the mean of its divisors is an integer number (47317296).

Almost surely, 2^1221030202 is an apocalyptic number.

1221030202 is a deficient number, since it is larger than the sum of its proper divisors (1050200006).

1221030202 is a wasteful number, since it uses less digits than its factorization.

1221030202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6511 (or 6494 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1221030202 is about 34943.2425799324. The cubic root of 1221030202 is about 1068.8304109579.

Adding to 1221030202 its reverse (2020301221), we get a palindrome (3241331423).

The spelling of 1221030202 in words is "one billion, two hundred twenty-one million, thirty thousand, two hundred two".