10001004421 has 2 divisors, whose sum is σ = 10001004422. Its totient is φ = 10001004420.

The previous prime is 10001004373. The next prime is 10001004437. The reversal of 10001004421 is 12440010001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7182562500 + 2818441921 = 84750^2 + 53089^2 .

It is an emirp because it is prime and its reverse (12440010001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10001004421 - 2¹⁵ = 10000971653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10001004491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000502210 + 5000502211.

It is an arithmetic number, because the mean of its divisors is an integer number (5000502211).

Almost surely, 2^10001004421 is an apocalyptic number.

It is an amenable number.

10001004421 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001004421 is an equidigital number, since it uses as much as digits as its factorization.

10001004421 is an evil number, because the sum of its binary digits is even.

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

Adding to 10001004421 its reverse (12440010001), we get a palindrome (22441014422).

The spelling of 10001004421 in words is "ten billion, one million, four thousand, four hundred twenty-one".