1001220210 has 32 divisors (see below), whose sum is σ = 2669921280. Its totient is φ = 266991984.

The previous prime is 1001220149. The next prime is 1001220221. The reversal of 1001220210 is 120221001.

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 = 1001220192 and 1001220201.

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 15 ways as a sum of consecutive naturals, for example, 1853842 + ... + 1854381.

It is an arithmetic number, because the mean of its divisors is an integer number (83435040).

Almost surely, 2^1001220210 is an apocalyptic number.

1001220210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001220210 is an abundant number, since it is smaller than the sum of its proper divisors (1668701070).

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

1001220210 is a wasteful number, since it uses less digits than its factorization.

1001220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3708239 (or 3708233 counting only the distinct ones).

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

The square root of 1001220210 is about 31642.0639339472. The cubic root of 1001220210 is about 1000.4065713440.

Adding to 1001220210 its reverse (120221001), we get a palindrome (1121441211).

The spelling of 1001220210 in words is "one billion, one million, two hundred twenty thousand, two hundred ten".