22213020 has 24 divisors (see below), whose sum is σ = 62196624. Its totient is φ = 5923456.

The previous prime is 22213007. The next prime is 22213049. The reversal of 22213020 is 2031222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22212987 and 22213005.

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 7 ways as a sum of consecutive naturals, for example, 185049 + ... + 185168.

It is an arithmetic number, because the mean of its divisors is an integer number (2591526).

Almost surely, 2^22213020 is an apocalyptic number.

22213020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22213020 is an abundant number, since it is smaller than the sum of its proper divisors (39983604).

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

22213020 is a wasteful number, since it uses less digits than its factorization.

22213020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370229 (or 370227 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 22213020 is about 4713.0690637842. The cubic root of 22213020 is about 281.1054091352.

Adding to 22213020 its reverse (2031222), we get a palindrome (24244242).

The spelling of 22213020 in words is "twenty-two million, two hundred thirteen thousand, twenty".