2011226140 has 144 divisors (see below), whose sum is σ = 5594964480. Its totient is φ = 589870080.

The previous prime is 2011226137. The next prime is 2011226149. The reversal of 2011226140 is 416221102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011226149) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 442801 + ... + 447319.

It is an arithmetic number, because the mean of its divisors is an integer number (38853920).

Almost surely, 2^2011226140 is an apocalyptic number.

2011226140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2011226140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2797482240).

2011226140 is an abundant number, since it is smaller than the sum of its proper divisors (3583738340).

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

2011226140 is a wasteful number, since it uses less digits than its factorization.

2011226140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4580 (or 4561 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2011226140 is about 44846.6959764039. The cubic root of 2011226140 is about 1262.2739946389.

Adding to 2011226140 its reverse (416221102), we get a palindrome (2427447242).

The spelling of 2011226140 in words is "two billion, eleven million, two hundred twenty-six thousand, one hundred forty".