11220623 has 2 divisors, whose sum is σ = 11220624. Its totient is φ = 11220622.

The previous prime is 11220553. The next prime is 11220631. The reversal of 11220623 is 32602211.

It is a strong prime.

It is an emirp because it is prime and its reverse (32602211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11220623 - 2⁸ = 11220367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11220653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5610311 + 5610312.

It is an arithmetic number, because the mean of its divisors is an integer number (5610312).

Almost surely, 2^11220623 is an apocalyptic number.

11220623 is a deficient number, since it is larger than the sum of its proper divisors (1).

11220623 is an equidigital number, since it uses as much as digits as its factorization.

11220623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 11220623 is about 3349.7198390313. The cubic root of 11220623 is about 223.8750299411.

Adding to 11220623 its reverse (32602211), we get a palindrome (43822834).

The spelling of 11220623 in words is "eleven million, two hundred twenty thousand, six hundred twenty-three".