2111021020873 has 2 divisors, whose sum is σ = 2111021020874. Its totient is φ = 2111021020872.

The previous prime is 2111021020837. The next prime is 2111021020879. The reversal of 2111021020873 is 3780201201112.

Together with previous prime (2111021020837) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1766700863929 + 344320156944 = 1329173^2 + 586788^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111021020873 is a prime.

It is not a weakly prime, because it can be changed into another prime (2111021020879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055510510436 + 1055510510437.

It is an arithmetic number, because the mean of its divisors is an integer number (1055510510437).

Almost surely, 2^{2111021020873} is an apocalyptic number.

It is an amenable number.

2111021020873 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111021020873 is an equidigital number, since it uses as much as digits as its factorization.

2111021020873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 2111021020873 its reverse (3780201201112), we get a palindrome (5891222221985).

The spelling of 2111021020873 in words is "two trillion, one hundred eleven billion, twenty-one million, twenty thousand, eight hundred seventy-three".