23120111011 has 2 divisors, whose sum is σ = 23120111012. Its totient is φ = 23120111010.

The previous prime is 23120110987. The next prime is 23120111029. The reversal of 23120111011 is 11011102132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23120111011 - 2⁷ = 23120110883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23120110982 and 23120111000.

It is not a weakly prime, because it can be changed into another prime (23120111041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11560055505 + 11560055506.

It is an arithmetic number, because the mean of its divisors is an integer number (11560055506).

Almost surely, 2^23120111011 is an apocalyptic number.

23120111011 is a deficient number, since it is larger than the sum of its proper divisors (1).

23120111011 is an equidigital number, since it uses as much as digits as its factorization.

23120111011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 23120111011 its reverse (11011102132), we get a palindrome (34131213143).

The spelling of 23120111011 in words is "twenty-three billion, one hundred twenty million, one hundred eleven thousand, eleven".