8100220018 has 8 divisors (see below), whose sum is σ = 13254905520. Its totient is φ = 3681918180.

The previous prime is 8100220001. The next prime is 8100220021.

8100220018 is nontrivially palindromic in base 10.

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

It is a super-2 number, since 2×8100220018² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 368191819 = 8100220018 / (8 + 1 + 0 + 0 + 2 + 2 + 0 + 0 + 1 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184095888 + ... + 184095931.

It is an arithmetic number, because the mean of its divisors is an integer number (1656863190).

Almost surely, 2^8100220018 is an apocalyptic number.

8100220018 is a deficient number, since it is larger than the sum of its proper divisors (5154685502).

8100220018 is a wasteful number, since it uses less digits than its factorization.

8100220018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368191832.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 8100220018 is about 90001.2223139219. Note that the first 3 decimals coincide. The cubic root of 8100220018 is about 2008.3170336990.

The spelling of 8100220018 in words is "eight billion, one hundred million, two hundred twenty thousand, eighteen".