11303420221 has 4 divisors (see below), whose sum is σ = 11366568000. Its totient is φ = 11240272444.

The previous prime is 11303420203. The next prime is 11303420239. The reversal of 11303420221 is 12202430311.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (11303420203) and next prime (11303420239).

It is a cyclic number.

It is not a de Polignac number, because 11303420221 - 2⁹ = 11303419709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11303420201) 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, 31573621 + ... + 31573978.

It is an arithmetic number, because the mean of its divisors is an integer number (2841642000).

Almost surely, 2^11303420221 is an apocalyptic number.

It is an amenable number.

11303420221 is a deficient number, since it is larger than the sum of its proper divisors (63147779).

11303420221 is an equidigital number, since it uses as much as digits as its factorization.

11303420221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63147778.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 11303420221 its reverse (12202430311), we get a palindrome (23505850532).

The spelling of 11303420221 in words is "eleven billion, three hundred three million, four hundred twenty thousand, two hundred twenty-one".