11020081 has 2 divisors, whose sum is σ = 11020082. Its totient is φ = 11020080.

The previous prime is 11020049. The next prime is 11020091. The reversal of 11020081 is 18002011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7182400 + 3837681 = 2680^2 + 1959^2 .

It is a cyclic number.

It is not a de Polignac number, because 11020081 - 2⁵ = 11020049 is a prime.

It is a super-2 number, since 2×11020081² = 242884370493122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11020001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5510040 + 5510041.

It is an arithmetic number, because the mean of its divisors is an integer number (5510041).

Almost surely, 2^11020081 is an apocalyptic number.

It is an amenable number.

11020081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11020081 is an equidigital number, since it uses as much as digits as its factorization.

11020081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 11020081 is about 3319.6507346406. The cubic root of 11020081 is about 222.5332593466.

Adding to 11020081 its reverse (18002011), we get a palindrome (29022092).

The spelling of 11020081 in words is "eleven million, twenty thousand, eighty-one".