22020471 has 16 divisors (see below), whose sum is σ = 35589120. Its totient is φ = 13345560.

The previous prime is 22020443. The next prime is 22020497. The reversal of 22020471 is 17402022.

It is not a de Polignac number, because 22020471 - 2¹⁵ = 21987703 is a prime.

It is a super-3 number, since 3×22020471³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36775 + ... + 37368.

It is an arithmetic number, because the mean of its divisors is an integer number (2224320).

Almost surely, 2^22020471 is an apocalyptic number.

22020471 is a deficient number, since it is larger than the sum of its proper divisors (13568649).

22020471 is a wasteful number, since it uses less digits than its factorization.

22020471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74163 (or 74157 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 22020471 is about 4692.5974683537. The cubic root of 22020471 is about 280.2908160428.

Adding to 22020471 its reverse (17402022), we get a palindrome (39422493).

The spelling of 22020471 in words is "twenty-two million, twenty thousand, four hundred seventy-one".