10421413021 has 4 divisors (see below), whose sum is σ = 10598047200. Its totient is φ = 10244778844.

The previous prime is 10421412983. The next prime is 10421413027. The reversal of 10421413021 is 12031412401.

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 10421413021 - 2⁷ = 10421412893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10421413021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10421413027) 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, 88317001 + ... + 88317118.

It is an arithmetic number, because the mean of its divisors is an integer number (2649511800).

Almost surely, 2^10421413021 is an apocalyptic number.

It is an amenable number.

10421413021 is a deficient number, since it is larger than the sum of its proper divisors (176634179).

10421413021 is an equidigital number, since it uses as much as digits as its factorization.

10421413021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176634178.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 10421413021 its reverse (12031412401), we get a palindrome (22452825422).

The spelling of 10421413021 in words is "ten billion, four hundred twenty-one million, four hundred thirteen thousand, twenty-one".