1020221001018 has 48 divisors (see below), whose sum is σ = 2212518029280. Its totient is φ = 339760114272.

The previous prime is 1020221001017. The next prime is 1020221001029. The reversal of 1020221001018 is 8101001220201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1020221001017) 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, 113189880 + ... + 113198892.

It is an arithmetic number, because the mean of its divisors is an integer number (46094125610).

Almost surely, 2^{1020221001018} is an apocalyptic number.

1020221001018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1020221001018 is an abundant number, since it is smaller than the sum of its proper divisors (1192297028262).

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

1020221001018 is a wasteful number, since it uses less digits than its factorization.

1020221001018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14123 (or 14120 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1020221001018 its reverse (8101001220201), we get a palindrome (9121222221219).

The spelling of 1020221001018 in words is "one trillion, twenty billion, two hundred twenty-one million, one thousand, eighteen".