20011034411 has 4 divisors (see below), whose sum is σ = 20388601152. Its totient is φ = 19633467672.

The previous prime is 20011034363. The next prime is 20011034413. The reversal of 20011034411 is 11443011002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11443011002 = 2 ⋅5721505501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20011034411 is a prime.

It is a super-2 number, since 2×20011034411² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20011034411.

It is not an unprimeable number, because it can be changed into a prime (20011034413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188783291 + ... + 188783396.

It is an arithmetic number, because the mean of its divisors is an integer number (5097150288).

Almost surely, 2^20011034411 is an apocalyptic number.

20011034411 is a deficient number, since it is larger than the sum of its proper divisors (377566741).

20011034411 is an equidigital number, since it uses as much as digits as its factorization.

20011034411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377566740.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20011034411 its reverse (11443011002), we get a palindrome (31454045413).

The spelling of 20011034411 in words is "twenty billion, eleven million, thirty-four thousand, four hundred eleven".