1021103220 has 24 divisors (see below), whose sum is σ = 2859089184. Its totient is φ = 272294176.

The previous prime is 1021103197. The next prime is 1021103261. The reversal of 1021103220 is 223011201.

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

It is a zygodrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1021103196 and 1021103205.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 8509134 + ... + 8509253.

It is an arithmetic number, because the mean of its divisors is an integer number (119128716).

Almost surely, 2^1021103220 is an apocalyptic number.

1021103220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021103220 is an abundant number, since it is smaller than the sum of its proper divisors (1837985964).

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

1021103220 is a wasteful number, since it uses less digits than its factorization.

1021103220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17018399 (or 17018397 counting only the distinct ones).

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

The square root of 1021103220 is about 31954.7057567426. The cubic root of 1021103220 is about 1006.9854958897.

Adding to 1021103220 its reverse (223011201), we get a palindrome (1244114421).

The spelling of 1021103220 in words is "one billion, twenty-one million, one hundred three thousand, two hundred twenty".