1001222010 has 48 divisors (see below), whose sum is σ = 2638854504. Its totient is φ = 263333376.

The previous prime is 1001221999. The next prime is 1001222017. The reversal of 1001222010 is 102221001.

It can be written as a sum of positive squares in 4 ways, for example, as 979627401 + 21594609 = 31299^2 + 4647^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1001221983 and 1001222001.

It is not an unprimeable number, because it can be changed into a prime (1001222017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69627 + ... + 82766.

Almost surely, 2^1001222010 is an apocalyptic number.

1001222010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001222010 is an abundant number, since it is smaller than the sum of its proper divisors (1637632494).

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

1001222010 is a wasteful number, since it uses less digits than its factorization.

1001222010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152479 (or 152476 counting only the distinct ones).

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

The square root of 1001222010 is about 31642.0923770853. The cubic root of 1001222010 is about 1000.4071708561.

Adding to 1001222010 its reverse (102221001), we get a palindrome (1103443011).

The spelling of 1001222010 in words is "one billion, one million, two hundred twenty-two thousand, ten".