2011041021 has 32 divisors (see below), whose sum is σ = 3093221376. Its totient is φ = 1150704000.

The previous prime is 2011041017. The next prime is 2011041031. The reversal of 2011041021 is 1201401102.

It is a happy number.

It is not a de Polignac number, because 2011041021 - 2² = 2011041017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011040988 and 2011041006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011041031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17970 + ... + 65916.

It is an arithmetic number, because the mean of its divisors is an integer number (96663168).

Almost surely, 2^2011041021 is an apocalyptic number.

It is an amenable number.

2011041021 is a deficient number, since it is larger than the sum of its proper divisors (1082180355).

2011041021 is a wasteful number, since it uses less digits than its factorization.

2011041021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48033.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2011041021 is about 44844.6320198973. The cubic root of 2011041021 is about 1262.2352656823.

Adding to 2011041021 its reverse (1201401102), we get a palindrome (3212442123).

The spelling of 2011041021 in words is "two billion, eleven million, forty-one thousand, twenty-one".