2126820011 has 2 divisors, whose sum is σ = 2126820012. Its totient is φ = 2126820010.

The previous prime is 2126819899. The next prime is 2126820029. The reversal of 2126820011 is 1100286212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2126820011 is a prime.

It is not a weakly prime, because it can be changed into another prime (2126820611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063410005 + 1063410006.

It is an arithmetic number, because the mean of its divisors is an integer number (1063410006).

Almost surely, 2^2126820011 is an apocalyptic number.

2126820011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126820011 is an equidigital number, since it uses as much as digits as its factorization.

2126820011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 2126820011 is about 46117.4588523696. The cubic root of 2126820011 is about 1286.0077306531.

The spelling of 2126820011 in words is "two billion, one hundred twenty-six million, eight hundred twenty thousand, eleven".