22211020 has 24 divisors (see below), whose sum is σ = 50231664. Its totient is φ = 8200896.

The previous prime is 22211009. The next prime is 22211041. The reversal of 22211020 is 2011222.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 22210988 and 22211006.

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 7 ways as a sum of consecutive naturals, for example, 42454 + ... + 42973.

It is an arithmetic number, because the mean of its divisors is an integer number (2092986).

Almost surely, 2^22211020 is an apocalyptic number.

22211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22211020 is an abundant number, since it is smaller than the sum of its proper divisors (28020644).

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

22211020 is a wasteful number, since it uses less digits than its factorization.

22211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85449 (or 85447 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 22211020 is about 4712.8568830381. The cubic root of 22211020 is about 281.0969722261.

Adding to 22211020 its reverse (2011222), we get a palindrome (24222242).

The spelling of 22211020 in words is "twenty-two million, two hundred eleven thousand, twenty".