10012421 has 4 divisors (see below), whose sum is σ = 10245312. Its totient is φ = 9779532.

The previous prime is 10012417. The next prime is 10012423. The reversal of 10012421 is 12421001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12421001 = 3457 ⋅3593.

It is a cyclic number.

It is not a de Polignac number, because 10012421 - 2² = 10012417 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 (10012423) 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, 116381 + ... + 116466.

It is an arithmetic number, because the mean of its divisors is an integer number (2561328).

Almost surely, 2^10012421 is an apocalyptic number.

It is an amenable number.

10012421 is a deficient number, since it is larger than the sum of its proper divisors (232891).

10012421 is an equidigital number, since it uses as much as digits as its factorization.

10012421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232890.

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

The square root of 10012421 is about 3164.2409832375. The cubic root of 10012421 is about 215.5326328742.

Adding to 10012421 its reverse (12421001), we get a palindrome (22433422).

It can be divided in two parts, 100 and 12421, that added together give a palindrome (12521).

The spelling of 10012421 in words is "ten million, twelve thousand, four hundred twenty-one".