10303400221 has 8 divisors (see below), whose sum is σ = 10387340280. Its totient is φ = 10219692288.

The previous prime is 10303400209. The next prime is 10303400251. The reversal of 10303400221 is 12200430301.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 729756196 + 9573644025 = 27014^2 + 97845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10303400221 - 2⁹ = 10303399709 is a prime.

It is a super-2 number, since 2×10303400221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10303400195 and 10303400204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10303400201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31665 + ... + 147001.

It is an arithmetic number, because the mean of its divisors is an integer number (1298417535).

Almost surely, 2^10303400221 is an apocalyptic number.

It is an amenable number.

10303400221 is a deficient number, since it is larger than the sum of its proper divisors (83940059).

10303400221 is a wasteful number, since it uses less digits than its factorization.

10303400221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116063.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 10303400221 its reverse (12200430301), we get a palindrome (22503830522).

The spelling of 10303400221 in words is "ten billion, three hundred three million, four hundred thousand, two hundred twenty-one".