1212223488 has 208 divisors, whose sum is σ = 3915953280. Its totient is φ = 325582848.

The previous prime is 1212223477. The next prime is 1212223559. The reversal of 1212223488 is 8843222121.

It is a Cunningham number, because it is equal to 34817²-1.

It is a super-2 number, since 2×1212223488² = 2938971569717772288, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1461858 + ... + 1462686.

Almost surely, 2^1212223488 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 1212223488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1957976640).

1212223488 is an abundant number, since it is smaller than the sum of its proper divisors (2703729792).

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

1212223488 is an equidigital number, since it uses as much as digits as its factorization.

1212223488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 880 (or 858 counting only the distinct ones).

The product of its digits is 12288, while the sum is 33.

The square root of 1212223488 is about 34816.9999856392. Note that the first 4 decimals coincide. The cubic root of 1212223488 is about 1066.2545519080.

The spelling of 1212223488 in words is "one billion, two hundred twelve million, two hundred twenty-three thousand, four hundred eighty-eight".