211111041144551 has 2 divisors, whose sum is σ = 211111041144552. Its totient is φ = 211111041144550.

The previous prime is 211111041144467. The next prime is 211111041144569. The reversal of 211111041144551 is 155441140111112.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211111041144551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211111041134551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105555520572275 + 105555520572276.

It is an arithmetic number, because the mean of its divisors is an integer number (105555520572276).

Almost surely, 2^{211111041144551} is an apocalyptic number.

211111041144551 is a deficient number, since it is larger than the sum of its proper divisors (1).

211111041144551 is an equidigital number, since it uses as much as digits as its factorization.

211111041144551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3200, while the sum is 32.

Adding to 211111041144551 its reverse (155441140111112), we get a palindrome (366552181255663).

The spelling of 211111041144551 in words is "two hundred eleven trillion, one hundred eleven billion, forty-one million, one hundred forty-four thousand, five hundred fifty-one".