1217226112 has 64 divisors (see below), whose sum is σ = 2627499600. Its totient is φ = 559448064.

The previous prime is 1217226107. The next prime is 1217226113. The reversal of 1217226112 is 2116227121.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1217226113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87064 + ... + 100072.

Almost surely, 2^1217226112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1217226112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1313749800).

1217226112 is an abundant number, since it is smaller than the sum of its proper divisors (1410273488).

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

1217226112 is a wasteful number, since it uses less digits than its factorization.

1217226112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13083 (or 13071 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 1217226112 is about 34888.7677053805. The cubic root of 1217226112 is about 1067.7192845154.

The spelling of 1217226112 in words is "one billion, two hundred seventeen million, two hundred twenty-six thousand, one hundred twelve".