2011411043021 has 2 divisors, whose sum is σ = 2011411043022. Its totient is φ = 2011411043020.

The previous prime is 2011411042969. The next prime is 2011411043023. The reversal of 2011411043021 is 1203401141102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1995964281796 + 15446761225 = 1412786^2 + 124285^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011411043021 - 2³⁰ = 2010337301197 is a prime.

It is a super-2 number, since 2×2011411043021² (a number of 25 digits) contains 22 as substring.

Together with 2011411043023, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011411042984 and 2011411043002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2011411043023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005705521510 + 1005705521511.

It is an arithmetic number, because the mean of its divisors is an integer number (1005705521511).

Almost surely, 2^{2011411043021} is an apocalyptic number.

It is an amenable number.

2011411043021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011411043021 is an equidigital number, since it uses as much as digits as its factorization.

2011411043021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 2011411043021 its reverse (1203401141102), we get a palindrome (3214812184123).

The spelling of 2011411043021 in words is "two trillion, eleven billion, four hundred eleven million, forty-three thousand, twenty-one".