20181000022 has 8 divisors (see below), whose sum is σ = 30401421336. Its totient is φ = 10047192912.

The previous prime is 20181000011. The next prime is 20181000023. The reversal of 20181000022 is 22000018102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20181000023) 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, 21652968 + ... + 21653899.

It is an arithmetic number, because the mean of its divisors is an integer number (3800177667).

Almost surely, 2^20181000022 is an apocalyptic number.

20181000022 is a deficient number, since it is larger than the sum of its proper divisors (10220421314).

20181000022 is a wasteful number, since it uses less digits than its factorization.

20181000022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43307102.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20181000022 its reverse (22000018102), we get a palindrome (42181018124).

The spelling of 20181000022 in words is "twenty billion, one hundred eighty-one million, twenty-two", and thus it is an aban number.