20101111223 has 2 divisors, whose sum is σ = 20101111224. Its totient is φ = 20101111222.

The previous prime is 20101111213. The next prime is 20101111241. The reversal of 20101111223 is 32211110102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20101111223 - 2⁶ = 20101111159 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20101111198 and 20101111207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20101111213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050555611 + 10050555612.

It is an arithmetic number, because the mean of its divisors is an integer number (10050555612).

Almost surely, 2^20101111223 is an apocalyptic number.

20101111223 is a deficient number, since it is larger than the sum of its proper divisors (1).

20101111223 is an equidigital number, since it uses as much as digits as its factorization.

20101111223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 20101111223 its reverse (32211110102), we get a palindrome (52312221325).

The spelling of 20101111223 in words is "twenty billion, one hundred one million, one hundred eleven thousand, two hundred twenty-three".