10001445421 has 4 divisors (see below), whose sum is σ = 10910667744. Its totient is φ = 9092223100.

The previous prime is 10001445409. The next prime is 10001445427. The reversal of 10001445421 is 12454410001.

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 a de Polignac number, because none of the positive numbers 2^k-10001445421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10001445392 and 10001445401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001445427) 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, 454611145 + ... + 454611166.

It is an arithmetic number, because the mean of its divisors is an integer number (2727666936).

Almost surely, 2^10001445421 is an apocalyptic number.

10001445421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10001445421 is a deficient number, since it is larger than the sum of its proper divisors (909222323).

10001445421 is an equidigital number, since it uses as much as digits as its factorization.

10001445421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909222322.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 10001445421 its reverse (12454410001), we get a palindrome (22455855422).

The spelling of 10001445421 in words is "ten billion, one million, four hundred forty-five thousand, four hundred twenty-one".