1222250500 has 48 divisors (see below), whose sum is σ = 2673111168. Its totient is φ = 488220000.

The previous prime is 1222250441. The next prime is 1222250507. The reversal of 1222250500 is 50522221.

It is not an unprimeable number, because it can be changed into a prime (1222250507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 514315 + ... + 516685.

It is an arithmetic number, because the mean of its divisors is an integer number (55689816).

Almost surely, 2^1222250500 is an apocalyptic number.

1222250500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222250500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1336555584).

1222250500 is an abundant number, since it is smaller than the sum of its proper divisors (1450860668).

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

1222250500 is a wasteful number, since it uses less digits than its factorization.

1222250500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3421 (or 3409 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 1222250500 is about 34960.6993637141. The cubic root of 1222250500 is about 1069.1863555662.

Adding to 1222250500 its reverse (50522221), we get a palindrome (1272772721).

The spelling of 1222250500 in words is "one billion, two hundred twenty-two million, two hundred fifty thousand, five hundred".