1222447650 has 96 divisors (see below), whose sum is σ = 3251845440. Its totient is φ = 302964480.

The previous prime is 1222447621. The next prime is 1222447651. The reversal of 1222447650 is 567442221.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1222447651) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 147004 + ... + 155096.

It is an arithmetic number, because the mean of its divisors is an integer number (33873390).

Almost surely, 2^1222447650 is an apocalyptic number.

1222447650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222447650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1625922720).

1222447650 is an abundant number, since it is smaller than the sum of its proper divisors (2029397790).

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

1222447650 is a wasteful number, since it uses less digits than its factorization.

1222447650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8180 (or 8175 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 1222447650 is about 34963.5188446472. The cubic root of 1222447650 is about 1069.2438393519.

Adding to 1222447650 its reverse (567442221), we get a palindrome (1789889871).

The spelling of 1222447650 in words is "one billion, two hundred twenty-two million, four hundred forty-seven thousand, six hundred fifty".