22011745 has 16 divisors (see below), whose sum is σ = 30832128. Its totient is φ = 14771520.

The previous prime is 22011733. The next prime is 22011749. The reversal of 22011745 is 54711022.

It is a happy number.

It is not a de Polignac number, because 22011745 - 2¹⁷ = 21880673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22011749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5046 + ... + 8335.

It is an arithmetic number, because the mean of its divisors is an integer number (1927008).

Almost surely, 2^22011745 is an apocalyptic number.

It is an amenable number.

22011745 is a deficient number, since it is larger than the sum of its proper divisors (8820383).

22011745 is a wasteful number, since it uses less digits than its factorization.

22011745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13440.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 22011745 is about 4691.6676139727. The cubic root of 22011745 is about 280.2537877583.

Adding to 22011745 its reverse (54711022), we get a palindrome (76722767).

The spelling of 22011745 in words is "twenty-two million, eleven thousand, seven hundred forty-five".