22011140 has 12 divisors (see below), whose sum is σ = 46223436. Its totient is φ = 8804448.

The previous prime is 22011131. The next prime is 22011149. The reversal of 22011140 is 4111022.

It is an interprime number because it is at equal distance from previous prime (22011131) and next prime (22011149).

It can be written as a sum of positive squares in 2 ways, for example, as 12376324 + 9634816 = 3518^2 + 3104^2 .

It is not an unprimeable number, because it can be changed into a prime (22011149) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 550259 + ... + 550298.

It is an arithmetic number, because the mean of its divisors is an integer number (3851953).

Almost surely, 2^22011140 is an apocalyptic number.

22011140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011140 is an abundant number, since it is smaller than the sum of its proper divisors (24212296).

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

22011140 is a wasteful number, since it uses less digits than its factorization.

22011140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100566 (or 1100564 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 22011140 is about 4691.6031375213. The cubic root of 22011140 is about 280.2512201124.

Adding to 22011140 its reverse (4111022), we get a palindrome (26122162).

The spelling of 22011140 in words is "twenty-two million, eleven thousand, one hundred forty".