2011221430 has 32 divisors (see below), whose sum is σ = 3786393600. Its totient is φ = 767719392.

The previous prime is 2011221409. The next prime is 2011221439. The reversal of 2011221430 is 341221102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011221439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91011 + ... + 110929.

It is an arithmetic number, because the mean of its divisors is an integer number (118324800).

Almost surely, 2^2011221430 is an apocalyptic number.

2011221430 is a deficient number, since it is larger than the sum of its proper divisors (1775172170).

2011221430 is a wasteful number, since it uses less digits than its factorization.

2011221430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20388.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2011221430 is about 44846.6434641434. The cubic root of 2011221430 is about 1262.2730092839.

Adding to 2011221430 its reverse (341221102), we get a palindrome (2352442532).

The spelling of 2011221430 in words is "two billion, eleven million, two hundred twenty-one thousand, four hundred thirty".