22201144 has 16 divisors (see below), whose sum is σ = 47574000. Its totient is φ = 9514752.

The previous prime is 22201129. The next prime is 22201159. The reversal of 22201144 is 44110222.

It is an interprime number because it is at equal distance from previous prime (22201129) and next prime (22201159).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198169 + ... + 198280.

It is an arithmetic number, because the mean of its divisors is an integer number (2973375).

Almost surely, 2^22201144 is an apocalyptic number.

It is an amenable number.

22201144 is an abundant number, since it is smaller than the sum of its proper divisors (25372856).

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

22201144 is a wasteful number, since it uses less digits than its factorization.

22201144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396462 (or 396458 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 22201144 is about 4711.8089944309. The cubic root of 22201144 is about 281.0553033419.

Adding to 22201144 its reverse (44110222), we get a palindrome (66311366).

It can be divided in two parts, 22201 and 144, that multiplied together give a square (3196944 = 1788²).

The spelling of 22201144 in words is "twenty-two million, two hundred one thousand, one hundred forty-four".