2012112421 has 8 divisors (see below), whose sum is σ = 2195625888. Its totient is φ = 1828698000.

The previous prime is 2012112413. The next prime is 2012112439. The reversal of 2012112421 is 1242112102.

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 2012112421 - 2³ = 2012112413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012112395 and 2012112404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012115421) 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 7 ways as a sum of consecutive naturals, for example, 21486 + ... + 66976.

It is an arithmetic number, because the mean of its divisors is an integer number (274453236).

Almost surely, 2^2012112421 is an apocalyptic number.

It is an amenable number.

2012112421 is a deficient number, since it is larger than the sum of its proper divisors (183513467).

2012112421 is a wasteful number, since it uses less digits than its factorization.

2012112421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49523.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 2012112421 is about 44856.5761176664. The cubic root of 2012112421 is about 1262.4593815772.

Adding to 2012112421 its reverse (1242112102), we get a palindrome (3254224523).

The spelling of 2012112421 in words is "two billion, twelve million, one hundred twelve thousand, four hundred twenty-one".