20111214223 has 2 divisors, whose sum is σ = 20111214224. Its totient is φ = 20111214222.

The previous prime is 20111214157. The next prime is 20111214229. The reversal of 20111214223 is 32241211102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20111214223 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20111214223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20111214229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055607111 + 10055607112.

It is an arithmetic number, because the mean of its divisors is an integer number (10055607112).

Almost surely, 2^20111214223 is an apocalyptic number.

20111214223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111214223 is an equidigital number, since it uses as much as digits as its factorization.

20111214223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20111214223 its reverse (32241211102), we get a palindrome (52352425325).

The spelling of 20111214223 in words is "twenty billion, one hundred eleven million, two hundred fourteen thousand, two hundred twenty-three".