22113541 has 2 divisors, whose sum is σ = 22113542. Its totient is φ = 22113540.

The previous prime is 22113529. The next prime is 22113577. The reversal of 22113541 is 14531122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14984641 + 7128900 = 3871^2 + 2670^2 .

It is a cyclic number.

It is not a de Polignac number, because 22113541 - 2¹¹ = 22111493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22113521) by changing a digit.

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 as a sum of consecutive naturals, namely, 11056770 + 11056771.

It is an arithmetic number, because the mean of its divisors is an integer number (11056771).

Almost surely, 2^22113541 is an apocalyptic number.

It is an amenable number.

22113541 is a deficient number, since it is larger than the sum of its proper divisors (1).

22113541 is an equidigital number, since it uses as much as digits as its factorization.

22113541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 240, while the sum is 19.

The square root of 22113541 is about 4702.5036948417. The cubic root of 22113541 is about 280.6851460937.

Adding to 22113541 its reverse (14531122), we get a palindrome (36644663).

The spelling of 22113541 in words is "twenty-two million, one hundred thirteen thousand, five hundred forty-one".