1123422210 has 80 divisors (see below), whose sum is σ = 3038597496. Its totient is φ = 297810432.

The previous prime is 1123422197. The next prime is 1123422217. The reversal of 1123422210 is 122243211.

It is a happy number.

1123422210 is a `hidden beast` number, since 11 + 23 + 422 + 210 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1085636601 + 37785609 = 32949^2 + 6147^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1123422217) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 136122 + ... + 144138.

Almost surely, 2^1123422210 is an apocalyptic number.

1123422210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1123422210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1519298748).

1123422210 is an abundant number, since it is smaller than the sum of its proper divisors (1915175286).

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

1123422210 is a wasteful number, since it uses less digits than its factorization.

1123422210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8209 (or 8200 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1123422210 is about 33517.4911053915. The cubic root of 1123422210 is about 1039.5554713875. Note that the first 3 decimals are identical.

Adding to 1123422210 its reverse (122243211), we get a palindrome (1245665421).

The spelling of 1123422210 in words is "one billion, one hundred twenty-three million, four hundred twenty-two thousand, two hundred ten".