1020302220 has 192 divisors, whose sum is σ = 3372880896. Its totient is φ = 225607680.

The previous prime is 1020302219. The next prime is 1020302251. The reversal of 1020302220 is 222030201.

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

It is a junction number, because it is equal to n+sod(n) for n = 1020302196 and 1020302205.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3323307 + ... + 3323613.

It is an arithmetic number, because the mean of its divisors is an integer number (17567088).

Almost surely, 2^1020302220 is an apocalyptic number.

1020302220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020302220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1686440448).

1020302220 is an abundant number, since it is smaller than the sum of its proper divisors (2352578676).

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

1020302220 is a wasteful number, since it uses less digits than its factorization.

1020302220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 558 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1020302220 is about 31942.1699325515. The cubic root of 1020302220 is about 1006.7221185385.

Adding to 1020302220 its reverse (222030201), we get a palindrome (1242332421).

The spelling of 1020302220 in words is "one billion, twenty million, three hundred two thousand, two hundred twenty".