211120211021287 has 2 divisors, whose sum is σ = 211120211021288. Its totient is φ = 211120211021286.

The previous prime is 211120211021219. The next prime is 211120211021333. The reversal of 211120211021287 is 782120112021112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211120211021287 - 2³¹ = 211118063537639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211120211021887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105560105510643 + 105560105510644.

It is an arithmetic number, because the mean of its divisors is an integer number (105560105510644).

Almost surely, 2^{211120211021287} is an apocalyptic number.

211120211021287 is a deficient number, since it is larger than the sum of its proper divisors (1).

211120211021287 is an equidigital number, since it uses as much as digits as its factorization.

211120211021287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 31.

Adding to 211120211021287 its reverse (782120112021112), we get a palindrome (993240323042399).

The spelling of 211120211021287 in words is "two hundred eleven trillion, one hundred twenty billion, two hundred eleven million, twenty-one thousand, two hundred eighty-seven".