12010421 has 4 divisors (see below), whose sum is σ = 12056352. Its totient is φ = 11964492.

The previous prime is 12010399. The next prime is 12010447. The reversal of 12010421 is 12401021.

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 12010421 - 2⁶ = 12010357 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 (12010021) 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, 22571 + ... + 23096.

It is an arithmetic number, because the mean of its divisors is an integer number (3014088).

Almost surely, 2^12010421 is an apocalyptic number.

It is an amenable number.

12010421 is a deficient number, since it is larger than the sum of its proper divisors (45931).

12010421 is an equidigital number, since it uses as much as digits as its factorization.

12010421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45930.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 12010421 is about 3465.6054305128. The cubic root of 12010421 is about 229.0091019310.

Adding to 12010421 its reverse (12401021), we get a palindrome (24411442).

The spelling of 12010421 in words is "twelve million, ten thousand, four hundred twenty-one".