1000122210 has 96 divisors (see below), whose sum is σ = 2684139120. Its totient is φ = 258177024.

The previous prime is 1000122191. The next prime is 1000122239. The reversal of 1000122210 is 122210001.

It can be written as a sum of positive squares in 8 ways, for example, as 662702049 + 337420161 = 25743^2 + 18369^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1000122192 and 1000122201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 775246 + ... + 776534.

Almost surely, 2^1000122210 is an apocalyptic number.

1000122210 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 1000122210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342069560).

1000122210 is an abundant number, since it is smaller than the sum of its proper divisors (1684016910).

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

1000122210 is a wasteful number, since it uses less digits than its factorization.

1000122210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572 (or 1569 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1000122210 is about 31624.7088524148. The cubic root of 1000122210 is about 1000.0407350073.

Adding to 1000122210 its reverse (122210001), we get a palindrome (1122332211).

The spelling of 1000122210 in words is "one billion, one hundred twenty-two thousand, two hundred ten".