2011112421 has 4 divisors (see below), whose sum is σ = 2681483232. Its totient is φ = 1340741612.

The previous prime is 2011112413. The next prime is 2011112423. The reversal of 2011112421 is 1242111102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2011112421 - 2³ = 2011112413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2011112421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011112423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335185401 + ... + 335185406.

It is an arithmetic number, because the mean of its divisors is an integer number (670370808).

Almost surely, 2^2011112421 is an apocalyptic number.

It is an amenable number.

2011112421 is a deficient number, since it is larger than the sum of its proper divisors (670370811).

2011112421 is an equidigital number, since it uses as much as digits as its factorization.

2011112421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670370810.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 2011112421 is about 44845.4280947345. The cubic root of 2011112421 is about 1262.2502036391.

Adding to 2011112421 its reverse (1242111102), we get a palindrome (3253223523).

The spelling of 2011112421 in words is "two billion, eleven million, one hundred twelve thousand, four hundred twenty-one".