1223552512 has 80 divisors (see below), whose sum is σ = 3008994912. Its totient is φ = 484024320.

The previous prime is 1223552507. The next prime is 1223552513. The reversal of 1223552512 is 2152553221.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223552513) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33462 + ... + 59722.

Almost surely, 2^1223552512 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 1223552512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1504497456).

1223552512 is an abundant number, since it is smaller than the sum of its proper divisors (1785442400).

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

1223552512 is an equidigital number, since it uses as much as digits as its factorization.

1223552512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26299 (or 26283 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 1223552512 is about 34979.3154878708. The cubic root of 1223552512 is about 1069.5658739068.

The spelling of 1223552512 in words is "one billion, two hundred twenty-three million, five hundred fifty-two thousand, five hundred twelve".