23112131122211 has 2 divisors, whose sum is σ = 23112131122212. Its totient is φ = 23112131122210.

The previous prime is 23112131122183. The next prime is 23112131122231. The reversal of 23112131122211 is 11222113121132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23112131122211 - 2¹⁸ = 23112130860067 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (23112131122231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11556065561105 + 11556065561106.

It is an arithmetic number, because the mean of its divisors is an integer number (11556065561106).

Almost surely, 2^{23112131122211} is an apocalyptic number.

23112131122211 is a deficient number, since it is larger than the sum of its proper divisors (1).

23112131122211 is an equidigital number, since it uses as much as digits as its factorization.

23112131122211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 23.

Adding to 23112131122211 its reverse (11222113121132), we get a palindrome (34334244243343).

The spelling of 23112131122211 in words is "twenty-three trillion, one hundred twelve billion, one hundred thirty-one million, one hundred twenty-two thousand, two hundred eleven".