1020220011018 has 80 divisors (see below), whose sum is σ = 2462596367616. Its totient is φ = 313824857760.

The previous prime is 1020220011011. The next prime is 1020220011029. The reversal of 1020220011018 is 8101100220201.

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 (1020220011011) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7563183 + ... + 7696893.

Almost surely, 2^{1020220011018} is an apocalyptic number.

1020220011018 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020220011018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231298183808).

1020220011018 is an abundant number, since it is smaller than the sum of its proper divisors (1442376356598).

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

1020220011018 is a wasteful number, since it uses less digits than its factorization.

1020220011018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137361 (or 137352 counting only the distinct ones).

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

Adding to 1020220011018 its reverse (8101100220201), we get a palindrome (9121320231219).

The spelling of 1020220011018 in words is "one trillion, twenty billion, two hundred twenty million, eleven thousand, eighteen".