1222504512 has 168 divisors, whose sum is σ = 3430011936. Its totient is φ = 384147456.

The previous prime is 1222504511. The next prime is 1222504513. The reversal of 1222504512 is 2154052221.

It is an interprime number because it is at equal distance from previous prime (1222504511) and next prime (1222504513).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (1222504511) 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 23 ways as a sum of consecutive naturals, for example, 10818568 + ... + 10818680.

Almost surely, 2^1222504512 is an apocalyptic number.

1222504512 is a gapful number since it is divisible by the number (12) 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 1222504512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1715005968).

1222504512 is an abundant number, since it is smaller than the sum of its proper divisors (2207507424).

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

1222504512 is a wasteful number, since it uses less digits than its factorization.

1222504512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 214 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1222504512 is about 34964.3319970509. The cubic root of 1222504512 is about 1069.2604176762.

Adding to 1222504512 its reverse (2154052221), we get a palindrome (3376556733).

The spelling of 1222504512 in words is "one billion, two hundred twenty-two million, five hundred four thousand, five hundred twelve".