21270600011 has 2 divisors, whose sum is σ = 21270600012. Its totient is φ = 21270600010.

The previous prime is 21270599983. The next prime is 21270600037. The reversal of 21270600011 is 11000607212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21270600011 - 2³⁴ = 4090730827 is a prime.

It is not a weakly prime, because it can be changed into another prime (21270600511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10635300005 + 10635300006.

It is an arithmetic number, because the mean of its divisors is an integer number (10635300006).

Almost surely, 2^21270600011 is an apocalyptic number.

21270600011 is a deficient number, since it is larger than the sum of its proper divisors (1).

21270600011 is an equidigital number, since it uses as much as digits as its factorization.

21270600011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 20.

The spelling of 21270600011 in words is "twenty-one billion, two hundred seventy million, six hundred thousand, eleven".