10420221401 has 4 divisors (see below), whose sum is σ = 10424816100. Its totient is φ = 10415626704.

The previous prime is 10420221397. The next prime is 10420221419. The reversal of 10420221401 is 10412202401.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1630221376 + 8790000025 = 40376^2 + 93755^2 .

It is a cyclic number.

It is not a de Polignac number, because 10420221401 - 2² = 10420221397 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 10420221401.

It is not an unprimeable number, because it can be changed into a prime (10420221421) 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, 2293946 + ... + 2298483.

It is an arithmetic number, because the mean of its divisors is an integer number (2606204025).

Almost surely, 2^10420221401 is an apocalyptic number.

It is an amenable number.

10420221401 is a deficient number, since it is larger than the sum of its proper divisors (4594699).

10420221401 is an equidigital number, since it uses as much as digits as its factorization.

10420221401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4594698.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 10420221401 its reverse (10412202401), we get a palindrome (20832423802).

The spelling of 10420221401 in words is "ten billion, four hundred twenty million, two hundred twenty-one thousand, four hundred one".