2012010421 has 4 divisors (see below), whose sum is σ = 2024825932. Its totient is φ = 1999194912.

The previous prime is 2012010419. The next prime is 2012010437. The reversal of 2012010421 is 1240102102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1240102102 = 2 ⋅620051051.

It can be written as a sum of positive squares in 2 ways, for example, as 1434136900 + 577873521 = 37870^2 + 24039^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012010421 - 2¹ = 2012010419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012010521) 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, 6407520 + ... + 6407833.

It is an arithmetic number, because the mean of its divisors is an integer number (506206483).

Almost surely, 2^2012010421 is an apocalyptic number.

It is an amenable number.

2012010421 is a deficient number, since it is larger than the sum of its proper divisors (12815511).

2012010421 is a wasteful number, since it uses less digits than its factorization.

2012010421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12815510.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2012010421 is about 44855.4391462173. The cubic root of 2012010421 is about 1262.4380486021.

Adding to 2012010421 its reverse (1240102102), we get a palindrome (3252112523).

The spelling of 2012010421 in words is "two billion, twelve million, ten thousand, four hundred twenty-one".