20011041 has 6 divisors (see below), whose sum is σ = 28904850. Its totient is φ = 13340688.

The previous prime is 20011037. The next prime is 20011067. The reversal of 20011041 is 14011002.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18792225 + 1218816 = 4335^2 + 1104^2 .

It is not a de Polignac number, because 20011041 - 2² = 20011037 is a prime.

It is a super-4 number, since 4×20011041⁴ (a number of 30 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 2223449 = 20011041 / (2 + 0 + 0 + 1 + 1 + 0 + 4 + 1).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20011001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111716 + ... + 1111733.

It is an arithmetic number, because the mean of its divisors is an integer number (4817475).

Almost surely, 2^20011041 is an apocalyptic number.

It is an amenable number.

20011041 is a deficient number, since it is larger than the sum of its proper divisors (8893809).

20011041 is a wasteful number, since it uses less digits than its factorization.

20011041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223455 (or 2223452 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 20011041 is about 4473.3702060080. The cubic root of 20011041 is about 271.4917022789.

Adding to 20011041 its reverse (14011002), we get a palindrome (34022043).

The spelling of 20011041 in words is "twenty million, eleven thousand, forty-one".