22141812 has 96 divisors (see below), whose sum is σ = 66576384. Its totient is φ = 5558400.

The previous prime is 22141811. The next prime is 22141813. The reversal of 22141812 is 21814122.

It is an interprime number because it is at equal distance from previous prime (22141811) and next prime (22141813).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22141811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28258 + ... + 29030.

It is an arithmetic number, because the mean of its divisors is an integer number (693504).

Almost surely, 2^22141812 is an apocalyptic number.

22141812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22141812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33288192).

22141812 is an abundant number, since it is smaller than the sum of its proper divisors (44434572).

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

22141812 is a wasteful number, since it uses less digits than its factorization.

22141812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 829 (or 827 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

The square root of 22141812 is about 4705.5086866353. The cubic root of 22141812 is about 280.8047088926.

Adding to 22141812 its reverse (21814122), we get a palindrome (43955934).

The spelling of 22141812 in words is "twenty-two million, one hundred forty-one thousand, eight hundred twelve".