1122111000 has 96 divisors (see below), whose sum is σ = 3792765600. Its totient is φ = 299227200.

The previous prime is 1122110989. The next prime is 1122111013. The reversal of 1122111000 is 1112211.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53340 + ... + 71339.

It is an arithmetic number, because the mean of its divisors is an integer number (39507975).

Almost surely, 2^1122111000 is an apocalyptic number.

1122111000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122111000 is an abundant number, since it is smaller than the sum of its proper divisors (2670654600).

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

1122111000 is a wasteful number, since it uses less digits than its factorization.

1122111000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124706 (or 124689 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1122111000 is about 33497.9253088904. The cubic root of 1122111000 is about 1039.1508724844.

Adding to 1122111000 its reverse (1112211), we get a palindrome (1123223211).

It can be divided in two parts, 112 and 2111000, that added together give a palindrome (2111112).

The spelling of 1122111000 in words is "one billion, one hundred twenty-two million, one hundred eleven thousand".