1123210000 has 100 divisors (see below), whose sum is σ = 2966912784. Its totient is φ = 408400000.

The previous prime is 1123209977. The next prime is 1123210003. The reversal of 1123210000 is 123211.

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1123210003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 104895 + ... + 115105.

Almost surely, 2^1123210000 is an apocalyptic number.

1123210000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123210000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1483456392).

1123210000 is an abundant number, since it is smaller than the sum of its proper divisors (1843702784).

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

1123210000 is a wasteful number, since it uses less digits than its factorization.

1123210000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10250 (or 10229 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1123210000 is about 33514.3252953122. The cubic root of 1123210000 is about 1039.4900112970.

Adding to 1123210000 its reverse (123211), we get a palindrome (1123333211).

The spelling of 1123210000 in words is "one billion, one hundred twenty-three million, two hundred ten thousand".