22212544 has 14 divisors (see below), whose sum is σ = 44078144. Its totient is φ = 11106240.

The previous prime is 22212527. The next prime is 22212569. The reversal of 22212544 is 44521222.

It is a super-2 number, since 2×22212544² = 986794221903872, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 173472 + ... + 173599.

Almost surely, 2^22212544 is an apocalyptic number.

It is an amenable number.

22212544 is a deficient number, since it is larger than the sum of its proper divisors (21865600).

22212544 is an equidigital number, since it uses as much as digits as its factorization.

22212544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347083 (or 347073 counting only the distinct ones).

The product of its digits is 1280, while the sum is 22.

The square root of 22212544 is about 4713.0185656329. The cubic root of 22212544 is about 281.1034011968.

Adding to 22212544 its reverse (44521222), we get a palindrome (66733766).

The spelling of 22212544 in words is "twenty-two million, two hundred twelve thousand, five hundred forty-four".