1228198213 has 8 divisors (see below), whose sum is σ = 1348727616. Its totient is φ = 1109148000.

The previous prime is 1228198199. The next prime is 1228198253. The reversal of 1228198213 is 3128918221.

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 1228198213 - 2²¹ = 1226101061 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 (1228198253) 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 7 ways as a sum of consecutive naturals, for example, 368056 + ... + 371377.

It is an arithmetic number, because the mean of its divisors is an integer number (168590952).

Almost surely, 2^1228198213 is an apocalyptic number.

It is an amenable number.

1228198213 is a deficient number, since it is larger than the sum of its proper divisors (120529403).

1228198213 is a wasteful number, since it uses less digits than its factorization.

1228198213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739595.

The product of its digits is 13824, while the sum is 37.

The square root of 1228198213 is about 35045.6589751142. The cubic root of 1228198213 is about 1070.9178408654.

The spelling of 1228198213 in words is "one billion, two hundred twenty-eight million, one hundred ninety-eight thousand, two hundred thirteen".