20426235211 has 2 divisors, whose sum is σ = 20426235212. Its totient is φ = 20426235210.

The previous prime is 20426235187. The next prime is 20426235227. The reversal of 20426235211 is 11253262402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20426235211 - 2²⁵ = 20392680779 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20426235211.

It is not a weakly prime, because it can be changed into another prime (20426235311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10213117605 + 10213117606.

It is an arithmetic number, because the mean of its divisors is an integer number (10213117606).

Almost surely, 2^20426235211 is an apocalyptic number.

20426235211 is a deficient number, since it is larger than the sum of its proper divisors (1).

20426235211 is an equidigital number, since it uses as much as digits as its factorization.

20426235211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 20426235211 its reverse (11253262402), we get a palindrome (31679497613).

The spelling of 20426235211 in words is "twenty billion, four hundred twenty-six million, two hundred thirty-five thousand, two hundred eleven".