2011021044 has 12 divisors (see below), whose sum is σ = 4692382464. Its totient is φ = 670340344.

The previous prime is 2011021043. The next prime is 2011021063. The reversal of 2011021044 is 4401201102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011021043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83792532 + ... + 83792555.

It is an arithmetic number, because the mean of its divisors is an integer number (391031872).

Almost surely, 2^2011021044 is an apocalyptic number.

It is an amenable number.

2011021044 is an abundant number, since it is smaller than the sum of its proper divisors (2681361420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011021044 is a wasteful number, since it uses less digits than its factorization.

2011021044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167585094 (or 167585092 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2011021044 is about 44844.4092836554. The cubic root of 2011021044 is about 1262.2310861294.

Adding to 2011021044 its reverse (4401201102), we get a palindrome (6412222146).

The spelling of 2011021044 in words is "two billion, eleven million, twenty-one thousand, forty-four".