21233232212111 has 2 divisors, whose sum is σ = 21233232212112. Its totient is φ = 21233232212110.

The previous prime is 21233232212081. The next prime is 21233232212119. The reversal of 21233232212111 is 11121223233212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21233232212111 - 2⁴² = 16835185701007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21233232212119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10616616106055 + 10616616106056.

It is an arithmetic number, because the mean of its divisors is an integer number (10616616106056).

Almost surely, 2^{21233232212111} is an apocalyptic number.

21233232212111 is a deficient number, since it is larger than the sum of its proper divisors (1).

21233232212111 is an equidigital number, since it uses as much as digits as its factorization.

21233232212111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 26.

Adding to 21233232212111 its reverse (11121223233212), we get a palindrome (32354455445323).

The spelling of 21233232212111 in words is "twenty-one trillion, two hundred thirty-three billion, two hundred thirty-two million, two hundred twelve thousand, one hundred eleven".