20110011001 has 2 divisors, whose sum is σ = 20110011002. Its totient is φ = 20110011000.

The previous prime is 20110010981. The next prime is 20110011017. The reversal of 20110011001 is 10011001102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18414218601 + 1695792400 = 135699^2 + 41180^2 .

It is a cyclic number.

It is not a de Polignac number, because 20110011001 - 2²¹ = 20107913849 is a prime.

It is not a weakly prime, because it can be changed into another prime (20110011041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055005500 + 10055005501.

It is an arithmetic number, because the mean of its divisors is an integer number (10055005501).

Almost surely, 2^20110011001 is an apocalyptic number.

It is an amenable number.

20110011001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20110011001 is an equidigital number, since it uses as much as digits as its factorization.

20110011001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 20110011001 its reverse (10011001102), we get a palindrome (30121012103).

The spelling of 20110011001 in words is "twenty billion, one hundred ten million, eleven thousand, one".