1122778900 has 36 divisors (see below), whose sum is σ = 2437891708. Its totient is φ = 448842240.

The previous prime is 1122778883. The next prime is 1122778901. The reversal of 1122778900 is 98772211.

It can be written as a sum of positive squares in 6 ways, for example, as 40500496 + 1082278404 = 6364^2 + 32898^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1122778900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122778901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 301852 + ... + 305548.

Almost surely, 2^1122778900 is an apocalyptic number.

1122778900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122778900 is an abundant number, since it is smaller than the sum of its proper divisors (1315112808).

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

1122778900 is a wasteful number, since it uses less digits than its factorization.

1122778900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6748 (or 6741 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 37.

The square root of 1122778900 is about 33507.8930999847. The cubic root of 1122778900 is about 1039.3570051546.

The spelling of 1122778900 in words is "one billion, one hundred twenty-two million, seven hundred seventy-eight thousand, nine hundred".