21496606211 has 2 divisors, whose sum is σ = 21496606212. Its totient is φ = 21496606210.

The previous prime is 21496606193. The next prime is 21496606217. The reversal of 21496606211 is 11260669412.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21496606211 - 2¹⁴ = 21496589827 is a prime.

It is not a weakly prime, because it can be changed into another prime (21496606217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10748303105 + 10748303106.

It is an arithmetic number, because the mean of its divisors is an integer number (10748303106).

Almost surely, 2^21496606211 is an apocalyptic number.

21496606211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21496606211 is an equidigital number, since it uses as much as digits as its factorization.

21496606211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 21496606211 in words is "twenty-one billion, four hundred ninety-six million, six hundred six thousand, two hundred eleven".