1216002250 has 16 divisors (see below), whose sum is σ = 2276356680. Its totient is φ = 486400800.

The previous prime is 1216002239. The next prime is 1216002257. The reversal of 1216002250 is 522006121.

It can be written as a sum of positive squares in 4 ways, for example, as 69705801 + 1146296449 = 8349^2 + 33857^2 .

It is a super-2 number, since 2×1216002250² = 2957322944010125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1216002257) 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, 2431755 + ... + 2432254.

Almost surely, 2^1216002250 is an apocalyptic number.

1216002250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1216002250 is a deficient number, since it is larger than the sum of its proper divisors (1060354430).

1216002250 is an equidigital number, since it uses as much as digits as its factorization.

1216002250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4864026 (or 4864016 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1216002250 is about 34871.2238098980. The cubic root of 1216002250 is about 1067.3613178111.

Adding to 1216002250 its reverse (522006121), we get a palindrome (1738008371).

The spelling of 1216002250 in words is "one billion, two hundred sixteen million, two thousand, two hundred fifty".