16011223 has 2 divisors, whose sum is σ = 16011224. Its totient is φ = 16011222.

The previous prime is 16011211. The next prime is 16011251. The reversal of 16011223 is 32211061.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16011223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16011197 and 16011206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16011293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8005611 + 8005612.

It is an arithmetic number, because the mean of its divisors is an integer number (8005612).

Almost surely, 2^16011223 is an apocalyptic number.

16011223 is a deficient number, since it is larger than the sum of its proper divisors (1).

16011223 is an equidigital number, since it uses as much as digits as its factorization.

16011223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 16011223 is about 4001.4026290790. The cubic root of 16011223 is about 252.0431132669.

Adding to 16011223 its reverse (32211061), we get a palindrome (48222284).

The spelling of 16011223 in words is "sixteen million, eleven thousand, two hundred twenty-three".