20221683 has 8 divisors (see below), whose sum is σ = 27404496. Its totient is φ = 13260000.

The previous prime is 20221679. The next prime is 20221693. The reversal of 20221683 is 38612202.

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

It is not a de Polignac number, because 20221683 - 2² = 20221679 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20221633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55068 + ... + 55433.

It is an arithmetic number, because the mean of its divisors is an integer number (3425562).

Almost surely, 2^20221683 is an apocalyptic number.

20221683 is a deficient number, since it is larger than the sum of its proper divisors (7182813).

20221683 is a wasteful number, since it uses less digits than its factorization.

20221683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110565.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20221683 is about 4496.8525659621. The cubic root of 20221683 is about 272.4409792778.

Adding to 20221683 its reverse (38612202), we get a palindrome (58833885).

The spelling of 20221683 in words is "twenty million, two hundred twenty-one thousand, six hundred eighty-three".