1021110010218 has 12 divisors (see below), whose sum is σ = 2212405022178. Its totient is φ = 340370003400.

The previous prime is 1021110010211. The next prime is 1021110010229. The reversal of 1021110010218 is 8120100111201.

It can be written as a sum of positive squares in only one way, i.e., 1014183942489 + 6926067729 = 1007067^2 + 83223^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 56728333901 = 1021110010218 / (1 + 0 + 2 + 1 + 1 + 1 + 0 + 0 + 1 + 0 + 2 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 1021110010218.

It is not an unprimeable number, because it can be changed into a prime (1021110010211) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 28364166933 + ... + 28364166968.

Almost surely, 2^{1021110010218} is an apocalyptic number.

1021110010218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1021110010218 is an abundant number, since it is smaller than the sum of its proper divisors (1191295011960).

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

1021110010218 is a wasteful number, since it uses less digits than its factorization.

1021110010218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56728333909 (or 56728333906 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 1021110010218 its reverse (8120100111201), we get a palindrome (9141210121419).

The spelling of 1021110010218 in words is "one trillion, twenty-one billion, one hundred ten million, ten thousand, two hundred eighteen".