28303111222 has 4 divisors (see below), whose sum is σ = 42454666836. Its totient is φ = 14151555610.

The previous prime is 28303111217. The next prime is 28303111229. The reversal of 28303111222 is 22211130382.

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

It is a super-2 number, since 2×28303111222² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28303111229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7075777804 + ... + 7075777807.

It is an arithmetic number, because the mean of its divisors is an integer number (10613666709).

Almost surely, 2^28303111222 is an apocalyptic number.

28303111222 is a deficient number, since it is larger than the sum of its proper divisors (14151555614).

28303111222 is a wasteful number, since it uses less digits than its factorization.

28303111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14151555613.

The product of its (nonzero) digits is 1152, while the sum is 25.

The spelling of 28303111222 in words is "twenty-eight billion, three hundred three million, one hundred eleven thousand, two hundred twenty-two".