20011011073 has 2 divisors, whose sum is σ = 20011011074. Its totient is φ = 20011011072.

The previous prime is 20011011001. The next prime is 20011011113. The reversal of 20011011073 is 37011011002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19513854864 + 497156209 = 139692^2 + 22297^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011011073 - 2²⁵ = 19977456641 is a prime.

It is a super-2 number, since 2×20011011073² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20011011373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005505536 + 10005505537.

It is an arithmetic number, because the mean of its divisors is an integer number (10005505537).

Almost surely, 2^20011011073 is an apocalyptic number.

It is an amenable number.

20011011073 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011011073 is an equidigital number, since it uses as much as digits as its factorization.

20011011073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42, while the sum is 16.

Adding to 20011011073 its reverse (37011011002), we get a palindrome (57022022075).

The spelling of 20011011073 in words is "twenty billion, eleven million, eleven thousand, seventy-three".