11022521 has 2 divisors, whose sum is σ = 11022522. Its totient is φ = 11022520.

The previous prime is 11022503. The next prime is 11022541. The reversal of 11022521 is 12522011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11022400 + 121 = 3320^2 + 11^2 .

It is an emirp because it is prime and its reverse (12522011) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11022521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11022496 and 11022505.

It is not a weakly prime, because it can be changed into another prime (11022541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5511260 + 5511261.

It is an arithmetic number, because the mean of its divisors is an integer number (5511261).

Almost surely, 2^11022521 is an apocalyptic number.

It is an amenable number.

11022521 is a deficient number, since it is larger than the sum of its proper divisors (1).

11022521 is an equidigital number, since it uses as much as digits as its factorization.

11022521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 11022521 is about 3320.0182228416. The cubic root of 11022521 is about 222.5496821262.

Adding to 11022521 its reverse (12522011), we get a palindrome (23544532).

The spelling of 11022521 in words is "eleven million, twenty-two thousand, five hundred twenty-one".