2011021043 has 2 divisors, whose sum is σ = 2011021044. Its totient is φ = 2011021042.

The previous prime is 2011020989. The next prime is 2011021063. The reversal of 2011021043 is 3401201102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2011021043 - 2²⁰ = 2009972467 is a prime.

It is not a weakly prime, because it can be changed into another prime (2011021063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1005510521 + 1005510522.

It is an arithmetic number, because the mean of its divisors is an integer number (1005510522).

Almost surely, 2^2011021043 is an apocalyptic number.

2011021043 is a deficient number, since it is larger than the sum of its proper divisors (1).

2011021043 is an equidigital number, since it uses as much as digits as its factorization.

2011021043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2011021043 is about 44844.4092725058. The cubic root of 2011021043 is about 1262.2310859201.

Adding to 2011021043 its reverse (3401201102), we get a palindrome (5412222145).

The spelling of 2011021043 in words is "two billion, eleven million, twenty-one thousand, forty-three".