1021304302220 has 48 divisors (see below), whose sum is σ = 2271009853728. Its totient is φ = 384472458240.

The previous prime is 1021304302153. The next prime is 1021304302253. The reversal of 1021304302220 is 222034031201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1021304302192 and 1021304302201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8444375 + ... + 8564465.

It is an arithmetic number, because the mean of its divisors is an integer number (47312705286).

Almost surely, 2^{1021304302220} is an apocalyptic number.

1021304302220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021304302220 is an abundant number, since it is smaller than the sum of its proper divisors (1249705551508).

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

1021304302220 is a wasteful number, since it uses less digits than its factorization.

1021304302220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145130 (or 145128 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1021304302220 its reverse (222034031201), we get a palindrome (1243338333421).

The spelling of 1021304302220 in words is "one trillion, twenty-one billion, three hundred four million, three hundred two thousand, two hundred twenty".