20235440011 has 2 divisors, whose sum is σ = 20235440012. Its totient is φ = 20235440010.

The previous prime is 20235440003. The next prime is 20235440023. The reversal of 20235440011 is 11004453202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20235440011 - 2³ = 20235440003 is a prime.

It is not a weakly prime, because it can be changed into another prime (20235440041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10117720005 + 10117720006.

It is an arithmetic number, because the mean of its divisors is an integer number (10117720006).

Almost surely, 2^20235440011 is an apocalyptic number.

20235440011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20235440011 is an equidigital number, since it uses as much as digits as its factorization.

20235440011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 20235440011 its reverse (11004453202), we get a palindrome (31239893213).

The spelling of 20235440011 in words is "twenty billion, two hundred thirty-five million, four hundred forty thousand, eleven".