1122249999 has 32 divisors (see below), whose sum is σ = 1631660800. Its totient is φ = 682007040.

The previous prime is 1122249979. The next prime is 1122250009. The reversal of 1122249999 is 9999422211.

It is a Cunningham number, because it is equal to 33500²-1.

It is not a de Polignac number, because 1122249999 - 2⁵ = 1122249967 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122249959) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1306032 + ... + 1306890.

It is an arithmetic number, because the mean of its divisors is an integer number (50989400).

Almost surely, 2^1122249999 is an apocalyptic number.

1122249999 is a deficient number, since it is larger than the sum of its proper divisors (509410801).

1122249999 is a wasteful number, since it uses less digits than its factorization.

1122249999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255.

The product of its digits is 209952, while the sum is 48.

The square root of 1122249999 is about 33499.9999850746. Note that the first 4 decimals coincide. The cubic root of 1122249999 is about 1039.1937782126.

The spelling of 1122249999 in words is "one billion, one hundred twenty-two million, two hundred forty-nine thousand, nine hundred ninety-nine".