303222421 has 16 divisors (see below), whose sum is σ = 326536704. Its totient is φ = 280560384.

The previous prime is 303222383. The next prime is 303222467. The reversal of 303222421 is 124222303.

It is a de Polignac number, because none of the positive numbers 2^k-303222421 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 (303252421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274356 + ... + 275458.

It is an arithmetic number, because the mean of its divisors is an integer number (20408544).

Almost surely, 2^303222421 is an apocalyptic number.

It is an amenable number.

303222421 is a deficient number, since it is larger than the sum of its proper divisors (23314283).

303222421 is a wasteful number, since it uses less digits than its factorization.

303222421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 303222421 is about 17413.2828897942. The cubic root of 303222421 is about 671.8213020751.

Adding to 303222421 its reverse (124222303), we get a palindrome (427444724).

The spelling of 303222421 in words is "three hundred three million, two hundred twenty-two thousand, four hundred twenty-one".