1228222116 has 189 divisors, whose sum is σ = 3603261403. Its totient is φ = 365880240.

The previous prime is 1228222087. The next prime is 1228222157. The reversal of 1228222116 is 6112228221.

The square root of 1228222116 is 35046.

It is a perfect power (a square), and thus also a powerful number.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 1228222116.

It is an unprimeable number.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 20817295 + ... + 20817353.

Almost surely, 2^1228222116 is an apocalyptic number.

1228222116 is the 35046-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228222116

1228222116 is an abundant number, since it is smaller than the sum of its proper divisors (2375039287).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1228222116 is an equidigital number, since it uses as much as digits as its factorization.

1228222116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 75 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The cubic root of 1228222116 is about 1070.9247881651.

The spelling of 1228222116 in words is "one billion, two hundred twenty-eight million, two hundred twenty-two thousand, one hundred sixteen".