2011040221 has 8 divisors (see below), whose sum is σ = 2020459520. Its totient is φ = 2001637008.

The previous prime is 2011040209. The next prime is 2011040231. The reversal of 2011040221 is 1220401102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2011040221 - 2²³ = 2002651613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011040231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297760 + ... + 304438.

It is an arithmetic number, because the mean of its divisors is an integer number (252557440).

Almost surely, 2^2011040221 is an apocalyptic number.

It is an amenable number.

2011040221 is a deficient number, since it is larger than the sum of its proper divisors (9419299).

2011040221 is a wasteful number, since it uses less digits than its factorization.

2011040221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8043.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2011040221 is about 44844.6231002112. The cubic root of 2011040221 is about 1262.2350983083.

Adding to 2011040221 its reverse (1220401102), we get a palindrome (3231441323).

It can be divided in two parts, 20110 and 40221, that multiplied together give a triangular number (808844310 = T₄₀₂₂₀).

The spelling of 2011040221 in words is "two billion, eleven million, forty thousand, two hundred twenty-one".