1222066650 has 48 divisors (see below), whose sum is σ = 3463689024. Its totient is φ = 279329280.

The previous prime is 1222066649. The next prime is 1222066679. The reversal of 1222066650 is 566602221.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

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, 580887 + ... + 582986.

It is an arithmetic number, because the mean of its divisors is an integer number (72160188).

Almost surely, 2^1222066650 is an apocalyptic number.

1222066650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222066650 is an abundant number, since it is smaller than the sum of its proper divisors (2241622374).

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

1222066650 is a wasteful number, since it uses less digits than its factorization.

1222066650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163895 (or 1163890 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 1222066650 is about 34958.0698837908. The cubic root of 1222066650 is about 1069.1327441425.

Adding to 1222066650 its reverse (566602221), we get a palindrome (1788668871).

The spelling of 1222066650 in words is "one billion, two hundred twenty-two million, sixty-six thousand, six hundred fifty".