21110131183 has 2 divisors, whose sum is σ = 21110131184. Its totient is φ = 21110131182.

The previous prime is 21110131181. The next prime is 21110131187. The reversal of 21110131183 is 38113101112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21110131183 - 2¹ = 21110131181 is a prime.

Together with 21110131181, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21110131181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555065591 + 10555065592.

It is an arithmetic number, because the mean of its divisors is an integer number (10555065592).

Almost surely, 2^21110131183 is an apocalyptic number.

21110131183 is a deficient number, since it is larger than the sum of its proper divisors (1).

21110131183 is an equidigital number, since it uses as much as digits as its factorization.

21110131183 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 21110131183 its reverse (38113101112), we get a palindrome (59223232295).

The spelling of 21110131183 in words is "twenty-one billion, one hundred ten million, one hundred thirty-one thousand, one hundred eighty-three".