21233140111 has 2 divisors, whose sum is σ = 21233140112. Its totient is φ = 21233140110.

The previous prime is 21233140079. The next prime is 21233140121. The reversal of 21233140111 is 11104133212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21233140111 - 2⁵ = 21233140079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21233140121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616570055 + 10616570056.

It is an arithmetic number, because the mean of its divisors is an integer number (10616570056).

Almost surely, 2^21233140111 is an apocalyptic number.

21233140111 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233140111 is an equidigital number, since it uses as much as digits as its factorization.

21233140111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 21233140111 its reverse (11104133212), we get a palindrome (32337273323).

The spelling of 21233140111 in words is "twenty-one billion, two hundred thirty-three million, one hundred forty thousand, one hundred eleven".