20221118 has 8 divisors (see below), whose sum is σ = 31071600. Its totient is φ = 9863920.

The previous prime is 20221099. The next prime is 20221127. The reversal of 20221118 is 81112202.

It is a happy number.

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

It is a super-2 number, since 2×20221118² = 817787226339848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20221096 and 20221105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123218 + ... + 123381.

It is an arithmetic number, because the mean of its divisors is an integer number (3883950).

Almost surely, 2^20221118 is an apocalyptic number.

20221118 is a deficient number, since it is larger than the sum of its proper divisors (10850482).

20221118 is a wasteful number, since it uses less digits than its factorization.

20221118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246642.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 20221118 is about 4496.7897438061. The cubic root of 20221118 is about 272.4384418928.

The spelling of 20221118 in words is "twenty million, two hundred twenty-one thousand, one hundred eighteen".