22020120 has 64 divisors (see below), whose sum is σ = 73404000. Its totient is φ = 5871744.

The previous prime is 22020091. The next prime is 22020127. The reversal of 22020120 is 2102022.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9115 + ... + 11274.

Almost surely, 2^22020120 is an apocalyptic number.

22020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22020120 is an abundant number, since it is smaller than the sum of its proper divisors (51383880).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22020120 is a wasteful number, since it uses less digits than its factorization.

22020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20409 (or 20399 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 22020120 is about 4692.5600688750. The cubic root of 22020120 is about 280.2893267831.

Adding to 22020120 its reverse (2102022), we get a palindrome (24122142).

The spelling of 22020120 in words is "twenty-two million, twenty thousand, one hundred twenty".