1131222250 has 16 divisors (see below), whose sum is σ = 2117648520. Its totient is φ = 452488800.

The previous prime is 1131222229. The next prime is 1131222263. The reversal of 1131222250 is 522221311.

It can be written as a sum of positive squares in 4 ways, for example, as 616975921 + 514246329 = 24839^2 + 22677^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2262195 + ... + 2262694.

Almost surely, 2^1131222250 is an apocalyptic number.

1131222250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1131222250 is a deficient number, since it is larger than the sum of its proper divisors (986426270).

1131222250 is an equidigital number, since it uses as much as digits as its factorization.

1131222250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4524906 (or 4524896 counting only the distinct ones).

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

The square root of 1131222250 is about 33633.6475869032. The cubic root of 1131222250 is about 1041.9558393610.

Adding to 1131222250 its reverse (522221311), we get a palindrome (1653443561).

The spelling of 1131222250 in words is "one billion, one hundred thirty-one million, two hundred twenty-two thousand, two hundred fifty".