1223532000 has 192 divisors, whose sum is σ = 4454049600. Its totient is φ = 326246400.

The previous prime is 1223531987. The next prime is 1223532031. The reversal of 1223532000 is 2353221.

1223532000 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102336 + ... + 113664.

It is an arithmetic number, because the mean of its divisors is an integer number (23198175).

Almost surely, 2^1223532000 is an apocalyptic number.

1223532000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223532000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2227024800).

1223532000 is an abundant number, since it is smaller than the sum of its proper divisors (3230517600).

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

1223532000 is a wasteful number, since it uses less digits than its factorization.

1223532000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11363 (or 11339 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 1223532000 is about 34979.0222847924. The cubic root of 1223532000 is about 1069.5598970327.

Adding to 1223532000 its reverse (2353221), we get a palindrome (1225885221).

The spelling of 1223532000 in words is "one billion, two hundred twenty-three million, five hundred thirty-two thousand".