1022221000018 has 8 divisors (see below), whose sum is σ = 1533713603148. Its totient is φ = 510983132304.

The previous prime is 1022221000007. The next prime is 1022221000019. The reversal of 1022221000018 is 8100001222201.

It can be written as a sum of positive squares in 2 ways, for example, as 1020821267449 + 1399732569 = 1010357^2 + 37413^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1022220999959 and 1022221000004.

It is not an unprimeable number, because it can be changed into a prime (1022221000019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63673821 + ... + 63689872.

Almost surely, 2^{1022221000018} is an apocalyptic number.

1022221000018 is a deficient number, since it is larger than the sum of its proper divisors (511492603130).

1022221000018 is a wasteful number, since it uses less digits than its factorization.

1022221000018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127367708.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 1022221000018 its reverse (8100001222201), we get a palindrome (9122222222219).

The spelling of 1022221000018 in words is "one trillion, twenty-two billion, two hundred twenty-one million, eighteen", and thus it is an aban number.