1020221101018 has 32 divisors (see below), whose sum is σ = 1841111625600. Its totient is φ = 414200101824.

The previous prime is 1020221101001. The next prime is 1020221101019. The reversal of 1020221101018 is 8101011220201.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 1020221100986 and 1020221101004.

It is not an unprimeable number, because it can be changed into a prime (1020221101019) 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 15 ways as a sum of consecutive naturals, for example, 4669768 + ... + 4883356.

It is an arithmetic number, because the mean of its divisors is an integer number (57534738300).

Almost surely, 2^{1020221101018} is an apocalyptic number.

1020221101018 is a deficient number, since it is larger than the sum of its proper divisors (820890524582).

1020221101018 is a wasteful number, since it uses less digits than its factorization.

1020221101018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231574.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 1020221101018 its reverse (8101011220201), we get a palindrome (9121232321219).

The spelling of 1020221101018 in words is "one trillion, twenty billion, two hundred twenty-one million, one hundred one thousand, eighteen".