1122213000 has 128 divisors (see below), whose sum is σ = 3622320000. Its totient is φ = 288915200.

The previous prime is 1122212983. The next prime is 1122213023. The reversal of 1122213000 is 3122211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 80551 + ... + 93449.

It is an arithmetic number, because the mean of its divisors is an integer number (28299375).

Almost surely, 2^1122213000 is an apocalyptic number.

1122213000 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 1122213000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1811160000).

1122213000 is an abundant number, since it is smaller than the sum of its proper divisors (2500107000).

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

1122213000 is a wasteful number, since it uses less digits than its factorization.

1122213000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12952 (or 12938 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1122213000 is about 33499.4477566422. The cubic root of 1122213000 is about 1039.1823578359.

Adding to 1122213000 its reverse (3122211), we get a palindrome (1125335211).

The spelling of 1122213000 in words is "one billion, one hundred twenty-two million, two hundred thirteen thousand".