22421020 has 12 divisors (see below), whose sum is σ = 47084184. Its totient is φ = 8968400.

The previous prime is 22420999. The next prime is 22421023. The reversal of 22421020 is 2012422.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22421023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560506 + ... + 560545.

It is an arithmetic number, because the mean of its divisors is an integer number (3923682).

Almost surely, 2^22421020 is an apocalyptic number.

22421020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22421020 is an abundant number, since it is smaller than the sum of its proper divisors (24663164).

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

22421020 is a wasteful number, since it uses less digits than its factorization.

22421020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1121060 (or 1121058 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22421020 is about 4735.0839485694. The cubic root of 22421020 is about 281.9800968466.

Adding to 22421020 its reverse (2012422), we get a palindrome (24433442).

The spelling of 22421020 in words is "twenty-two million, four hundred twenty-one thousand, twenty".