1001222250 has 64 divisors (see below), whose sum is σ = 2856072960. Its totient is φ = 228849600.

The previous prime is 1001222231. The next prime is 1001222251. The reversal of 1001222250 is 522221001.

It is a super-3 number, since 3×1001222250³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1001222251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90105 + ... + 100604.

It is an arithmetic number, because the mean of its divisors is an integer number (44626140).

Almost surely, 2^1001222250 is an apocalyptic number.

1001222250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001222250 is an abundant number, since it is smaller than the sum of its proper divisors (1854850710).

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

1001222250 is a wasteful number, since it uses less digits than its factorization.

1001222250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190736 (or 190726 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1001222250 is about 31642.0961695018. The cubic root of 1001222250 is about 1000.4072507909.

Adding to 1001222250 its reverse (522221001), we get a palindrome (1523443251).

The spelling of 1001222250 in words is "one billion, one million, two hundred twenty-two thousand, two hundred fifty".