22143012 has 24 divisors (see below), whose sum is σ = 51942912. Its totient is φ = 7341600.

The previous prime is 22143001. The next prime is 22143013. The reversal of 22143012 is 21034122.

It is a super-3 number, since 3×22143012³ (a number of 23 digits) contains 333 as substring.

It is a zygodrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 22142982 and 22143000.

It is not an unprimeable number, because it can be changed into a prime (22143013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2539 + ... + 7122.

It is an arithmetic number, because the mean of its divisors is an integer number (2164288).

Almost surely, 2^22143012 is an apocalyptic number.

It is an amenable number.

22143012 is an abundant number, since it is smaller than the sum of its proper divisors (29799900).

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

22143012 is a wasteful number, since it uses less digits than its factorization.

22143012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9859 (or 9857 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 22143012 is about 4705.6361950325. The cubic root of 22143012 is about 280.8097816415.

Adding to 22143012 its reverse (21034122), we get a palindrome (43177134).

The spelling of 22143012 in words is "twenty-two million, one hundred forty-three thousand, twelve".