21111011110793 has 2 divisors, whose sum is σ = 21111011110794. Its totient is φ = 21111011110792.

The previous prime is 21111011110747. The next prime is 21111011110799. The reversal of 21111011110793 is 39701111011112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20376891161929 + 734119948864 = 4514077^2 + 856808^2 .

It is a cyclic number.

It is not a de Polignac number, because 21111011110793 - 2¹⁸ = 21111010848649 is a prime.

It is not a weakly prime, because it can be changed into another prime (21111011110799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555505555396 + 10555505555397.

It is an arithmetic number, because the mean of its divisors is an integer number (10555505555397).

Almost surely, 2^{21111011110793} is an apocalyptic number.

It is an amenable number.

21111011110793 is a deficient number, since it is larger than the sum of its proper divisors (1).

21111011110793 is an equidigital number, since it uses as much as digits as its factorization.

21111011110793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 29.

The spelling of 21111011110793 in words is "twenty-one trillion, one hundred eleven billion, eleven million, one hundred ten thousand, seven hundred ninety-three".